SSC CGL Tier 1 2016 General Intelligence & Reasoning Questions with Solutions

Explanation

Applying the given symbol substitutions to the expression 128 + 9 - 16 × 4: The symbol + is replaced by ×. The symbol - is replaced by +. The symbol × is replaced by ÷.

Substituting these into the original expression gives: 128 × 9 + 16 ÷ 4

According to the BODMAS rule, division is performed before multiplication and addition: 16 ÷ 4 = 4

Now the expression becomes: 128 × 9 + 4

Performing the multiplication: 128 × 9 = 1152

Finally, performing the addition: 1152 + 4 = 1156

Explanation

The logic followed in the given equations is based on the rearrangement of the digits of the operands. For an equation of the form a × b × c, the result is obtained by rearranging the digits in the specific sequence of b, a, and then c.

Applying this to the first case, 6 × 2 × 9 results in 269 by taking the second number (2), followed by the first number (6), and then the third number (9). Similarly, in the second case, 8 × 7 × 1 results in 781 by taking the second number (7), followed by the first number (8), and then the third number (1).

Following this same pattern for the unsolved equation 4 × 1 × 3, we take the second digit 1, followed by the first digit 4, and finally the third digit 3. Combining these in the determined sequence yields the result 143.

Explanation

The pattern in the given table is that the number in the fourth row of each column is the product of the numbers in the first three rows of that same column.

In the first column, the product is 9 × 3 × 3 = 81. In the second column, the product is 11 × 4 × 4 = 176. Following the same logic for the third column, the missing number is obtained by calculating 13 × 7 × 5 = 455.

Explanation

Sudhir's path can be mapped using Cartesian coordinates, starting at (0, 0). His first movement of 5 km South brings him to (0, -5). Taking a sharp left turn from a southward direction means he is now facing East. He travels 10 km in this direction, reaching the coordinates (10, -5). His second sharp left turn from an eastward direction points him North. Travelling 5 km North brings him to (10, 0), which is the location of the school. Comparing the starting point (0, 0) to the school's location (10, 0), the starting point is located exactly 10 km to the West of the school.

Explanation

Conclusion II follows directly from the second statement through the logical rule of conversion. In syllogism, a particular affirmative statement of the form Some A are B can always be converted into Some B are A. Since statement 2 states that some novels are poems, it is a logical certainty that the intersection of the set of poems and the set of novels is non-empty, making conclusion II definitely true. Conclusion I does not follow because the first statement places all books within the set of novels, but the second statement only establishes that some part of the novel set overlaps with poems. There is no information provided to guarantee that the specific subset of novels containing books overlaps with the set of poems.

Explanation

The word PAINTER cannot be formed from the letters of the word CARPENTER because it contains the letter I. When the letter composition of CARPENTER is examined, it consists of the letters C, A, R, P, E, N, T, E, and R. Since the letter I is entirely absent from this set, any word requiring that specific letter cannot be constructed.

Explanation

The coding logic follows an increasing incremental shift for each successive letter. Specifically, the n-th letter of the word is shifted forward in the alphabet by n + 1 positions.

Applying this pattern to the word FRIEND: F (6) + 2 = 8 (H) R (18) + 3 = 21 (U) I (9) + 4 = 13 (M) E (5) + 5 = 10 (J) N (14) + 6 = 20 (T) D (4) + 7 = 11 (K)

Applying the same logic to the word CANDLE: C (3) + 2 = 5 (E) A (1) + 3 = 4 (D) N (14) + 4 = 18 (R) D (4) + 5 = 9 (I) L (12) + 6 = 18 (R) E (5) + 7 = 12 (L)

Following this systematic addition, the resulting code for CANDLE is EDRIRL.

Explanation

By substituting the letter codes with their designated mathematical operators, the expression 14C3A12E4D2 is rewritten as:

14 × 3 - 12 + 4 ÷ 2

According to the BODMAS rule, the operations must be performed in the order of Division, Multiplication, Addition, and then Subtraction.

Step 1: Perform the division operation. 4 ÷ 2 = 2 The expression simplifies to: 14 × 3 - 12 + 2

Step 2: Perform the multiplication operation. 14 × 3 = 42 The expression simplifies to: 42 - 12 + 2

Step 3: Perform addition and subtraction. 42 + 2 - 12 = 44 - 12 = 32

The final value of the expression is 32.

Explanation

The logical pattern followed in the given equations is to add the second and third digits of the number and then subtract the first digit from that sum.

For the number 879: (7 + 9) - 8 = 16 - 8 = 8. For the number 625: (2 + 5) - 6 = 7 - 6 = 1. For the number 586: (8 + 6) - 5 = 14 - 5 = 9.

Applying the same logic to the number 785: (8 + 5) - 7 = 13 - 7 = 6.

Explanation

Sham's path forms three sides of a rectangle. Let his house be at point A and his friend's house be at point B.

Sham travels from A to B: Distance AB = 10 km. At point B, he takes a right turn and walks 2 km to point C: Distance BC = 2 km. In this coordinate system, BC is perpendicular to AB. At point C, he takes another right turn and walks 10 km to point D: Distance CD = 10 km. Since CD is parallel and equal in length to AB, point D lies directly across from point A. Finally, he takes another right turn at point D.

At this stage, Sham is at point D. Since ABCD forms a rectangle where AB = CD = 10 km and BC = AD = 2 km, the distance from his current position (D) to his house (A) is equal to the length of side AD.

Distance = 2 km

Explanation

The given statements form a deductive syllogism where a universal property is applied to a specific individual. The major premise establishes that the attribute of being tall is common to the entire set of boys. The minor premise places Rajiv within that set. In formal logic, this follows the principle of universal instantiation, which states that if a property applies to every member of a class, it must apply to any specific member of that class. Since Rajiv is a member of the class of boys, and all boys are tall, the conclusion that Rajiv is tall is logically certain and follows directly from the premises.

Explanation

The relationship in the first pair is based on a physical quantity and its standard unit of measurement. The SI unit of length is the meter. Similarly, the SI unit used to measure power is the watt. Power is defined as the rate at which work is done or energy is transformed, and one watt is equal to one joule per second.

Explanation

The relationship between the letter groups is determined by shifting each letter of the first term one position backward in the English alphabet. In the first pair, ZXVT and YWUS relate as follows: Z - 1 = Y, X - 1 = W, V - 1 = U, and T - 1 = S.

Applying this same logic to the second pair RPNL: R (18) - 1 = 17 (Q) P (16) - 1 = 15 (O) N (14) - 1 = 13 (M) L (12) - 1 = 11 (K)

By subtracting one from the alphabetical rank of each letter in the sequence RPNL, we obtain the sequence QOMK.

Explanation

The relationship between the numbers in the first pair follows the pattern where the second number is obtained by dividing the first number by 2 and then subtracting 1. This can be expressed by the formula y = ˣ⁄₂ - 1. Applying this to the first pair, we get ⁴²⁄₂ - 1 = 21 - 1 = 20. Following the same logic for the second pair with the number 64, the calculation becomes ⁶⁴⁄₂ - 1 = 32 - 1 = 31.

Explanation

In the English alphabet, the letters are categorized into vowels and consonants. The vowels are A, E, I, O, and U. Since A, U, and O are all vowels, the letter T is the odd one out because it is a consonant.

Explanation

April is the odd one out because it is the only month in the given list that has 30 days. January, July, and May all consist of 31 days.

Explanation

In the given number pairs, the relationship between the two numbers follows a specific arithmetic pattern. For the pairs in b, c, and d, the second number is obtained by adding 7 to the first number. Specifically, 31 + 7 = 38, 45 + 7 = 52, and 64 + 7 = 71. However, in pair a, the first number is 28 and the second is 21, meaning the second number is obtained by subtracting 7 from the first (28 - 7 = 21). This reversal of the arithmetic operation makes it the odd one out.

Explanation

To arrange the words in alphabetical order as they appear in a dictionary, compare each letter from left to right. All words begin with Z. The second letters are e for Zeal (1), Zebra (2), and Zest (5); i for Zinc (4); and y for Zygote (3). Alphabetically, e comes before i, and i comes before y. Among the words starting with Ze, comparing the third letters a, b, and s places Zeal (1) first, Zebra (2) second, and Zest (5) third. Zinc (4) follows these as i comes after e, and Zygote (3) comes last as y is the final letter among the group.

Explanation

The series consists of three separate alphabetical progressions for each position within the triads. For the first letters, the sequence is A, C, E, G, which follows a +2 increment in alphabetical positions (1, 3, 5, 7). The next letter is 7 + 2 = 9, which corresponds to I. For the second letters, the sequence is L, J, H, F, which follows a -2 decrement (12, 10, 8, 6). The next letter is 6 - 2 = 4, which corresponds to D. For the third letters, the sequence is Z, V, R, N, which follows a -4 decrement (26, 22, 18, 14). The next letter is 14 - 4 = 10, which corresponds to J. Combining these components yields the term IDJ.

Explanation

The numerical sequence is based on an alternating pattern of two mathematical operations: multiplication by 3 followed by division by 2.

Starting from the first term: 8 × 3 = 24 24 ÷ 2 = 12 12 × 3 = 36 36 ÷ 2 = 18 18 × 3 = 54

The pattern consists of the repeating cycle (× 3, ÷ 2). When this logic is applied to the third term, 12, the multiplication by 3 yields 36. This result is further validated because dividing 36 by 2 correctly produces the next known term in the series, 18.

Explanation

Chanda is the wife of Bharat, and Mohan is the son of Chanda, which establishes that Mohan is the son of Bharat. Ashish is the brother of Bharat, and Ashish is the father of Dhruv. Since Bharat and Ashish are brothers, their children, Mohan and Dhruv, are first cousins to each other. In genealogical terms, the relationship between children of siblings is defined as being cousins.

Explanation

To determine the seating arrangement, place E at one position on the round table. Since F is sitting opposite to E, F occupies the position directly across from E. C is sitting to the right of E, so if we assume the participants are facing the center of the table, C is placed in the seat immediately to E's right. It is given that C is opposite to A, which fixes A's position directly across from C.

Next, the condition that F is between A and D indicates that A and D must be the two people adjacent to F. Since A's position is already established next to F, D must occupy the seat on the other side of F. This leaves only one remaining seat between A and E, which must be occupied by B. In this circular configuration, A is positioned with F on one side and B on the other, making B and F the immediate neighbours of A.

Explanation

The word CENTRAL cannot be formed from the given word CONCENTRATION because it contains the letter L. A careful examination of the letters in CONCENTRATION (C, O, N, C, E, N, T, R, A, T, I, O, N) reveals that the letter L is entirely absent from the source word, making it impossible to construct any word requiring that specific character.

Explanation

The coding scheme uses opposite letters from the English alphabet, where the sum of the positions of the original letter and its corresponding code letter is always 27. In the example provided, D is the 4th letter and maps to W (23rd), A is the 1st letter and maps to Z (26th), and Y is the 25th letter and maps to B (2nd). In each case, 4 + 23 = 27, 1 + 26 = 27, and 25 + 2 = 27.

Applying this same logic to the word MONDAY: M (13th) maps to N (14th) because 13 + 14 = 27. O (15th) maps to L (12th) because 15 + 12 = 27. N (14th) maps to M (13th) because 14 + 13 = 27. D (4th) maps to W (23rd) because 4 + 23 = 27. A (1st) maps to Z (26th) because 1 + 26 = 27. Y (25th) maps to B (2nd) because 25 + 2 = 27. Concatenating these results yields the code NLMWZB.

Explanation

The given mathematical expression is 24 + 8 / 2 - 6 × 6. According to the substitution rules provided, the symbols are changed as follows: + becomes /, / becomes -, - becomes ×, and × becomes +. Substituting these symbols into the expression, we get:

24 / 8 - 2 × 6 + 6

Following the BODMAS rule, division is performed first. Dividing 24 by 8 gives 3, so the expression simplifies to:

3 - 2 × 6 + 6

Next, the multiplication is performed. Multiplying 2 by 6 gives 12, resulting in:

3 - 12 + 6

Finally, the addition and subtraction are performed from left to right. Subtracting 12 from 3 gives -9, and then adding 6 to -9 results in -3. Alternatively, adding the positive terms 3 and 6 gives 9, and then subtracting 12 from 9 also yields -3.

Explanation

The logic used in the given equations is based on a specific positional rearrangement of the digits. If we represent the equation as A × B × C, the resulting number is formed by concatenating the digits in the sequence B, A, C.

Applying this pattern to the provided examples: In 7 × 6 × 8, A=7, B=6, and C=8. Arranging them as BAC gives 678. In 8 × 9 × 7, A=8, B=9, and C=7. Arranging them as BAC gives 987. In 6 × 5 × 7, A=6, B=5, and C=7. Arranging them as BAC gives 567.

Following the same system for the unsolved equation 5 × 4 × 6: A = 5, B = 4, C = 6 Arranging these in the BAC order results in 456.

Explanation

The movement of the man can be tracked using standard cardinal directions where North is up, South is down, East is right, and West is left. Initially, the man walks 5 km towards the East. Taking a right turn from the East direction means rotating 90° clockwise, which points him towards the South. After walking 3 km in this direction, he takes another right turn. A second 90° clockwise rotation from the South direction points towards the West. Therefore, the man is currently facing West.

Explanation

The logic follows the principle of contraposition in deductive reasoning. Statement 1 establishes a universal rule where being four-footed is a necessary condition for being an animal (A ⟹ F). Statement 2 provides a specific premise that the dog has two legs, which means the dog is not four-footed (¬ F). According to the law of contrapositive, if the consequent is false, the antecedent must also be false (¬ F ⟹ ¬ A). Since the dog fails to meet the criterion of having four feet defined in the first statement, it cannot be classified as an animal under these specific premises. Therefore, Conclusion I is the only logical deduction that can be drawn.

Explanation

The relationship follows the pattern of an object and the optical instrument specifically used to observe it. A telescope is an instrument designed to view distant celestial objects like stars. Similarly, a periscope is an optical instrument used to observe objects that are out of the direct line of sight, such as viewing a ship on the surface of the water from a submerged submarine. Both pairs represent the tool utilized to bring a specific target into clear view.

Explanation

The pattern followed in the analogy is that each letter of the first group is shifted forward by 3 positions in the alphabetical sequence to obtain the corresponding letter of the second group. Specifically, Q +3 T, S +3 V, U +3 X, and W +3 Z. Applying the same logic to the third group ACEG, we find that A +3 D, C +3 F, E +3 H, and G +3 J. Following this transformation, the resulting letters are DFHJ.

Explanation

The relationship between the numbers in the given analogy follows the pattern x : (x × 5) - 6.

In the first pair, the calculation is 12 × 5 - 6 = 60 - 6 = 54.

Applying the same mathematical logic to the second pair, we multiply the first number by 5 and subtract 6: 15 × 5 - 6 = 75 - 6 = 69.

Explanation

The cat belongs to the biological family Felidae, commonly known as felines. In contrast, the wolf, dog, and fox all belong to the family Canidae, commonly referred to as canines. This taxonomic classification distinguishes the cat from the other three animals.

Explanation

The numerical positions of the letters in the English alphabet for the pair LR are L = 12 and R = 18. The difference between these two positions is 18 - 12 = 6. In contrast, for all other pairs, the difference between the positions of the letters is 4. In BF, the positions are 2 and 6 (6 - 2 = 4). In MQ, the positions are 13 and 17 (17 - 13 = 4). In AE, the positions are 1 and 5 (5 - 1 = 4). The pair LR is the odd one because it follows a difference of 6 rather than the common difference of 4.

Explanation

The pair 28-49 is the odd one out because it does not follow the y = 2x relationship that characterizes the rest of the group. In the other pairs, the second number is exactly double the first. Applying this logic to the first number, we find that 28 × 2 = 56, which contradicts the given value of 49. While the other sets represent a 1:2 ratio, this pair represents a 4:7 ratio, making it the mathematically distinct option.

Explanation

Dictionary arrangement follows alphabetical order letter by letter from left to right. All five words begin with the same three letters ASS. Comparing the fourth letter, I (in 1, 3, 4, and 5) comes before O (in 2), which places ASSOCIATE last in the sequence. Among the remaining words, the fifth letters are G (in 1 and 5) and S (in 3 and 4). Since G comes before S, the words starting with ASSIGN precede those starting with ASSIST. When one word is a prefix of another, the shorter word appears first; thus, ASSIGN comes before ASSIGNMENT (1 before 5), and ASSIST comes before ASSISTANT (3 before 4). Combining these steps, the correct alphabetical sequence is 1, 5, 3, 4, 2.

Explanation

The series progresses by moving forward three positions in the alphabet for each corresponding letter in the triplets. Examining the first letters of each group: F(6) + 3 = I(9), I(9) + 3 = L(12), and L(12) + 3 = O(15). Following this pattern, the next first letter is 15 + 3 = 18, which is R. Each triplet in the sequence consists of three consecutive letters arranged in reverse alphabetical order (F-E-D, I-H-G, L-K-J, O-N-M). Therefore, the triplet starting with R follows the same reverse consecutive pattern, resulting in RQP.

Explanation

The series follows a pattern where each term is the sum of the two preceding terms. This additive sequence is calculated as follows: 3 + 4 = 7 4 + 7 = 11 7 + 11 = 18 11 + 18 = 29 18 + 29 = 47

Applying the logic to the fourth position, the sum of the second term 4 and the third term 7 yields 11. This value is consistent with the rest of the series, as 7 + 11 equals the next term, 18.

Explanation

The lady's son's father is the husband of the lady in the photograph. The son-in-law of Seema's mother is the husband of Seema's sister or Seema's own husband. By equating these two descriptions, the husband of the lady is the same individual as the husband of Seema's sister. Consequently, the lady in the photograph is the sister of Seema.

Explanation

There are five positions in the line from left to right. Since R sits on the entrance left corner, R occupies the first position. Q sits next to R, placing Q in the second position. The condition that T does not sit next to Q implies T cannot occupy the third position, leaving T in either the fourth or fifth position. P and S must sit next to each other, which requires two adjacent seats. If T were at the fourth position, the remaining seats for P and S would be the third and fifth positions, which are not adjacent. Therefore, T must occupy the fifth position. Since P cannot sit next to T, P must occupy the third position, which leaves the fourth position for S. In this sequence of R, Q, P, S, T, P is the individual sitting to the immediate left of S.

Explanation

The word METHANE cannot be formed from the letters of EXPERIMENTAL because it contains the letter H. A close examination of the letter composition of EXPERIMENTAL (E, X, P, E, R, I, M, E, N, T, A, L) shows that the letter H is entirely absent from the source word.

Explanation

The coding scheme is based on the positional values of the English alphabet where A = 1, B = 2, C = 3, and so on. In the first instance, E occupies the 5th position, so E = 5. In the second instance, the value for PEN is the sum of the positions of its individual letters: P (16) + E (5) + N (14) = 35.

Applying this logic to calculate the value for PAGE, we sum the numerical positions of its constituent letters: P = 16 A = 1 G = 7 E = 5 Total sum = 16 + 1 + 7 + 5 = 29

Explanation

Based on the coding logic where mathematical operators are substituted, the expression is evaluated by replacing the given signs: + is replaced by ÷, × is replaced by -, - is replaced by ×, and ÷ is replaced by +.

Applying these substitutions to the original expression 48 + 16 × 4 - 2 ÷ 8, we get: 48 ÷ 16 - 4 × 2 + 8

According to the BODMAS rule, the operations are performed in the order of Division, Multiplication, Addition, and Subtraction:

Division: 48 ÷ 16 = 3 Multiplication: 4 × 2 = 8 Addition and Subtraction: 3 - 8 + 8

The final calculation is: 3 - 8 + 8 = 3

Explanation

The pattern follows a specific rearrangement of the digits from the left side of the equation to form the result on the right. If the input is represented as x × y × z, the output is formed by the sequence yzx.

In the first equation, 7 × 4 × 3 = 437, the second digit 4 moves to the first position, the third digit 3 moves to the middle position, and the first digit 7 moves to the last position. In the second equation, 8 × 6 × 4 = 648, the same logic applies where the second digit 6 comes first, the third digit 4 comes second, and the first digit 8 comes last. Following this yzx pattern for the unsolved equation 4 × 3 × 6, the second digit 3 is placed in the first position, the third digit 6 is placed in the middle position, and the first digit 4 is placed in the last position, resulting in 364.

Explanation

The pattern observed in the columns of the matrix follows the logic: (Row 1 + Row 2) × Row 3 = Row 4.

Applying this rule to the first column: (5 + 4) × 2 = 9 × 2 = 18

Applying this rule to the second column: (2 + 4) × 5 = 6 × 5 = 30

Following the same logic for the third column: (4 + 7) × 3 = 11 × 3 = 33

Explanation

The boy starts by moving towards the East. His first turn to the right changes his direction to the South. From the South, another right turn directs him towards the West. He then makes a left turn, which points him back towards the South. Following this, he performs another left turn, bringing his facing direction to the East. His final movement involves a third left turn starting from the East, which results in him facing North. The sequence of direction changes is East → South → West → South → East → North.

Explanation

According to the rules of syllogism, a particular affirmative statement of the form Some A are B can be logically converted into the form Some B are A. Statement II asserts that some scientists are shopkeepers. By applying the immediate inference of conversion, it is a logical necessity that some shopkeepers are scientists. The statements do not provide a definite intersection between the group of astronomers and the group of shopkeepers, nor does the universal relationship in statement I imply a reverse universal relationship between scientists and astronomers. Therefore, conclusion III is the only one that definitely follows from the given premises.

Explanation

The given analogy follows the relationship between a scientific field of study and its subject matter. Cytology is the branch of biology that deals with the study of cells in terms of structure, function, and chemistry. Similarly, Ornithology is the branch of zoology that involves the scientific study of birds, including their physiology, classification, ecology, and behavior.

Explanation

The relationship between the words is based on the numerical positions of the letters in the English alphabet (A=1, B=2, …, Z=26). Each word follows two specific patterns:

Each word consists of two pairs of alphabetical opposites (where the sum of their positions is 27). For RIGT: R(18) + I(9) = 27 and G(7) + T(20) = 27. For WDBY: W(23) + D(4) = 27 and B(2) + Y(25) = 27. For FUSH: F(6) + U(21) = 27 and S(19) + H(8) = 27. For BYWD: B(2) + Y(25) = 27 and W(23) + D(4) = 27.

The sum of the positions of the first and third letters is 25, and the sum of the second and fourth letters is 29. RIGT: 18 + 7 = 25 and 9 + 20 = 29. WDBY: 23 + 2 = 25 and 4 + 25 = 29. FUSH: 6 + 19 = 25 and 21 + 8 = 29. Applying this to the options, only BYWD (2, 25, 23, 4) fits: 2 + 23 = 25 and 25 + 4 = 29.

Explanation

The numerical analogy follows the mathematical pattern n(n + 1) : (n + 1)(n + 2). In the first pair, 42 can be expressed as 6 × 7, and the subsequent number 56 is 7 × 8. For the second pair, 110 is expressed as 10 × 11. Applying the same logic, the related number is (10 + 1) × (11 + 1), which is 11 × 12 = 132.

Alternatively, the relationship can be viewed as x² + x : (x+1)² + (x+1). 42 = 6² + 6 56 = 7² + 7 110 = 10² + 10 The missing term is 11² + 11 = 121 + 11 = 132.

Explanation

Currency is a general category or a collective term that represents the system of money used in a country. In contrast, Rupee, Pound, and Yen are specific names of individual currency units used by different nations. While the others are particular instances of money, Currency is the classification that encompasses them all.