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

Explanation

The letter series can be split into two groups of 5 letters each. By sequentially filling the gaps with the letters B, D, A, and C, the complete sequence becomes: ABCDEBADCE

We can divide this sequence into two equal halves: First half: ABCDE Second half: BADCE

The logical pattern between the two halves is: The first half represents the sequential order of the first five letters of the alphabet from A to E. The second half is formed by swapping the adjacent pairs of the first half (AB is swapped to BA, and CD is swapped to DC), while the final letter E remains unchanged in its position.

Explanation

Let the starting position (Home) be at coordinates (0, 0).

First, Amar moves 20 km East to reach the Hospital, placing the Hospital at coordinates (20, 0).

Next, he turns left (North) and travels 30 km to reach a turning point at coordinates (20, 30).

Finally, he turns left (West) and travels 20 km to reach his School. This places the School at coordinates (0, 30).

The School at (0, 30) lies directly North of the Home at (0, 0). The vertical distance between the horizontal line of the School and the horizontal line of the Hospital is 30 km.

Explanation

For the word INSERT, each letter is represented by its row number followed by its column number. The letter I is located at Row 1 and Column 1 in Matrix-I, giving 11. The letter N is found at Row 6 and Column 6 in Matrix-II, giving 66. The letter S lies at Row 2 and Column 3 in Matrix-I, giving 23. The letter E is situated at Row 8 and Column 7 in Matrix-II, giving 87. The letter R is located at Row 1 and Column 0 in Matrix-I, giving 10. Finally, the letter T is positioned at Row 7 and Column 8 in Matrix-II, giving 78.

Explanation

Amar's maternal grandfather's son is his maternal uncle. The son of his maternal uncle is his cousin.

Explanation

The relationship in the first pair is based on a workplace and the primary professional who delivers services there. A school is an institution where a teacher works to provide education. Applying the same logic to the second pair, a hospital is an institution where a doctor works to provide medical care.

Explanation

The relationship is based on the sum of the positional values of the letters in the English alphabetical order, where A = 1, B = 2, and so on, up to Z = 26.

For the first term JY: The alphabetical position of J is 10. The alphabetical position of Y is 25. Adding these positions gives 10 + 25 = 35.

Applying the same logic to the second term RT: The alphabetical position of R is 18. The alphabetical position of T is 20. Adding these positions gives 18 + 20 = 38.

Explanation

The positional values of the letters in the English alphabet are A = 1, B = 2, and D = 4.

For the first pair AD : N, combining the alphabetical positions of A (1) and D (4) as digits gives the number 14. The 14th letter of the English alphabet is N.

Applying the same logic to the second pair BD, combining the alphabetical positions of B (2) and D (4) as digits gives the number 24. The 24th letter of the English alphabet is X.

Explanation

The pattern of the analogy is based on finding the difference between the tens digit and the units digit of the given number.

For the first term, 97: 9 - 7 = 2

Applying the same rule to the second term, 84: 8 - 4 = 4

Explanation

Nephew is a male relative, whereas all the other options denote female relatives. This gender difference distinguishes it from the rest.

Explanation

The letter pair GH consists entirely of consonants, whereas all the other pairs consist entirely of vowels.

Explanation

The number 33 is a composite number because it has divisors other than 1 and itself, namely 3 and 11, whereas the other numbers in the group are prime numbers.

Explanation

In the given number classification, the pattern followed is that the product of the first two digits of the number is equal to the number formed by the last two digits.

For 3519, the product of the first two digits is 3 × 5 = 15, which is not equal to the last two digits (19). All other options follow this pattern, making this number the odd one out.

Explanation

The series represents the natural progression of water flow from its origin to its final destination. Water begins as a glacier, melts and cascades down as a waterfall, continues its journey as a river, and eventually empties into the sea.

Explanation

Let S represent shawls, C represent carpets, and P represent pullovers.

According to the first statement, all shawls are carpets, which means the set of shawls is a subset of the set of carpets (S ⊆ C).

According to the second statement, no carpet is a pullover, which means the set of carpets and the set of pullovers are completely disjoint (C ∩ P = ∅).

Since the set of shawls is entirely contained within the set of carpets, and the set of carpets has no overlap with the set of pullovers, the set of shawls can have no overlap with the set of pullovers (S ∩ P = ∅). Therefore, the conclusion that no shawls are pullovers logically and definitely follows.

Explanation

The series is formed by consecutive letter pairs where the position of the first letter of each term increases by a progressively larger increment. By converting the letters to their numerical positions in the alphabet, where A = 1, B = 2, C = 3, and so on, we can analyze the sequence:

HI: H = 8, I = 9 OP: O = 15, P = 16 WX: W = 23, X = 24

The first letters of the known terms are 8, 15, and 23. The differences between these positions are: 15 - 8 = 7 23 - 15 = 8

Since the difference increases by 1 at each step, the difference between the first term and the second term must be 6. This gives the numerical position of the first letter of the missing term as: 8 - 6 = 2

The letter at position 2 is B. Since each term in the series consists of two consecutive alphabetical letters, the missing term is BC.

Explanation

The terms in the given series are squares of consecutive even numbers starting from 12 with a common difference of 4:

12² = 144 16² = 256 20² = 400

Following this pattern, the next base in the sequence is 24. The next term is:

24² = 576

Explanation

The series progresses by adding a value that doubles with each consecutive step. The difference between the first and second terms is 7.5 - 5 = 2.5. The difference between the second and third terms is 12.5 - 7.5 = 5. The difference between the third and fourth terms is 22.5 - 12.5 = 10.

The differences form a geometric sequence of 2.5, 5, 10, where each successive difference is multiplied by 2. Following this rule, the next difference in the sequence is 10 × 2 = 20. Adding this to the fourth term yields 22.5 + 20 = 42.5.

Explanation

Let the relative heights of the individuals be represented using the inequality symbol >, where X > Y indicates X is taller than Y.

From the first statement, Vineet is taller than Raman but shorter than Jyoti, which is represented as Jyoti > Vineet > Raman.

From the second and third statements, Sumit is the shortest, and Deepak is taller than Sumit but shorter than Raman, which is represented as Raman > Deepak > Sumit.

Combining these two relations gives the overall height hierarchy from tallest to shortest: Jyoti > Vineet > Raman > Deepak > Sumit.

Explanation

To arrange the words in alphabetical order as they appear in a dictionary, we compare them letter by letter. All four words begin with the prefix Ra.

Comparing the third letter of each word, Rainbow (i) and Rainy (iv) have i, Rancour (ii) has n, and Rattle (iii) has t. Since i comes before n, and n comes before t in the alphabet, the words starting with Rain will appear first, followed by Rancour, and then Rattle.

To determine the order between Rainbow (i) and Rainy (iv), we compare their fifth letters because both share the first four letters Rain. The fifth letter of Rainbow is b, and the fifth letter of Rainy is y. Since b comes before y, Rainbow precedes Rainy.

This gives the final alphabetical sequence as Rainbow (i), Rainy (iv), Rancour (ii), and Rattle (iii).

Explanation

In the given coding language, each letter is assigned a specific digit through direct substitution. By comparing the words with their respective codes:

From BORROW coded as 769965: B is represented by 7 O is represented by 6 R is represented by 9 W is represented by 5

From BOMB coded as 7647: B is represented by 7 O is represented by 6 M is represented by 4

Applying these letter-to-digit mappings to the word WOMB: W is represented by 5 O is represented by 6 M is represented by 4 B is represented by 7

This yields the code 5647.

Explanation

In this number matrix, the sum of the numbers in each horizontal row is constant and equals 30.

For the first row: 5 + 15 + 10 = 30

For the second row: 4 + 17 + 9 = 30

For the third row: 10 + x + 10 = 30, which gives x = 30 - 20 = 10.

Explanation

By replacing the letters with their respective mathematical operators: A represents × B represents - C represents + D represents ÷

The given expression 7 B 17 C 88 D 11 A 6 becomes: 7 - 17 + 88 ÷ 11 × 6

According to the BODMAS rule, division is performed first, followed by multiplication, and then addition and subtraction: 7 - 17 + 8 × 6 7 - 17 + 48 -10 + 48 = 38

Explanation

The given letter series is formed by repeating the four-letter group ABBC.

Dividing the twelve-character series into three groups of four letters each gives: A_BC | _BBC | BB

Placing the letters B, A, A, and C sequentially into the blank spaces completes the pattern: ABBC | ABBC | ABBC

Explanation

Let the initial position of Rahul be at the origin (0, 0) of a coordinate system, where the positive y-axis represents North, the negative y-axis represents South, the positive x-axis represents East, and the negative x-axis represents West.

First, Rahul moves 5 km towards the south, which places him at the position (0, -5).

Next, he takes a left turn (pointing towards the east) and moves 5 km, reaching the position (5, -5).

Then, he takes another left turn (pointing towards the north) and moves 10 km, bringing him to the position (5, 5).

Finally, he moves 5 km towards the west, resulting in the coordinates (0, 5).

Comparing his final coordinates of (0, 5) to his starting coordinates of (0, 0) shows that his current location lies directly on the positive y-axis, which corresponds to the north direction.

Explanation

The letters of the word JOIN are represented using the row-by-column format from the given matrices. The letter J is located at Row 2, Column 0 in Matrix-I, which corresponds to 20. The letter O is located at Row 2, Column 3 in Matrix-I, corresponding to 23. The letter I is located at Row 8, Column 6 in Matrix-II, which corresponds to 86. The letter N is located at Row 9, Column 7 in Matrix-II, corresponding to 97. Combining these coordinates gives the set 20, 23, 86, 97.

Explanation

Let Nisha's only sister be S. Since S has only one sister, that sister is Nisha. The brother-in-law of S is the husband of her sister, who is Nisha's husband. Since Johnny's father is this brother-in-law, Johnny's father is Nisha's husband. This makes Nisha the mother of Johnny, meaning Johnny is the son of Nisha.

Explanation

The given analogy represents the relationship between an animal and the specific sound it produces. A horse makes a sound called a neigh, and similarly, the sound produced by an elephant is referred to as a trumpet.

Explanation

The positions of the English alphabets are mapped directly to form the digits of the corresponding number. G is the 7th letter and H is the 8th letter of the alphabet, which combine to form the number 78.

Applying the same logic, the number 1819 is formed by combining the positions of the 18th and 19th letters. The 18th letter in alphabetical order is R, and the 19th letter is S. This yields the letter pair RS.

Explanation

The logic of the analogy is that the letters of the word are written in reverse order. Reversing the letters of the word CAR results in RAC. Applying this same logic to the word TYRE, writing its letters in reverse order results in ERYT.

Explanation

The relationship in the first pair of numbers is established by multiplying the first number by 5: 12 × 5 = 60

Applying the same mathematical logic to the second pair: 28 × 5 = 140

Explanation

XYZ consists of letters arranged in forward alphabetical order, where each successive letter increases by one position in the alphabet. All other options consist of letters arranged in reverse alphabetical order, where each successive letter decreases by one position.

Explanation

The sum of the digits of the number 5656 is 22 (5 + 6 + 5 + 6 = 22), whereas the sum of the digits of all other numbers is 20.

Explanation

The number 2890 is not a perfect cube, whereas the other numbers are perfect cubes: 15³ = 3375, 12³ = 1728, and 11³ = 1331.

Explanation

The given series consists of sequential English numerical multiplier terms. Double represents a two-fold multiplier, Triple represents a three-fold multiplier, and Quadruple represents a four-fold multiplier. Following this consecutive integer sequence of multipliers, the next term must represent a five-fold multiplier, which is represented by the term Quintuple.

Explanation

The series follows a pattern where each letter in the terms increases by 4 positions in alphabetical order.

For the first letter of each term: A (1) + 4 = E (5) E (5) + 4 = I (9) I (9) + 4 = M (13)

For the second letter of each term: C (3) + 4 = G (7) G (7) + 4 = K (11) K (11) + 4 = O (15)

By combining these, the missing term is IK.

Explanation

The series consists of pairs of consecutive letters where the starting letter of each subsequent pair increases by an increasing step.

Comparing the first letters of the known pairs: From W (23rd letter) to A (1st letter, or 27th in the cycle), the difference is +4. From A (1st letter) to F (6th letter), the difference is +5.

Following this pattern, the step from the first term to the second term must be +3. Subtracting 3 from the position of W (23) gives 20, which corresponds to the letter T. Since each term consists of two consecutive letters, the pair starting with T is TU.

Explanation

The terms of the series are obtained by multiplying the preceding term by a sequence of numbers that increase by 4 at each step.

The pattern of multiplication is: 30 × 2 = 60 60 × 6 = 360 360 × 10 = 3600

The multipliers used are 2, 6, and 10, which form an arithmetic progression with a common difference of 4.

Following this pattern, the next multiplier must be 14 (10 + 4).

Multiplying the last term by 14 gives: 3600 × 14 = 50400

Explanation

Statement I establishes that women generally prefer window shopping, while Statement II establishes that males generally do not prefer window shopping and consider it a waste of time. Comparing these two statements directly shows that the shopping preferences and behaviors of males and females are distinct from each other. Thus, conclusion I logically and directly follows from the premises. Conclusion II does not follow because the statements only mention the general attitude of males towards window shopping as a waste of time, but they provide no factual information about how much time males actually spend selecting a product when they do go shopping.

Explanation

Let the heights of the five boys be arranged in descending order from tallest to shortest.

Since C is the tallest, C occupies the first position.

According to the given statements, A is taller than E but shorter than D, which gives the relation D > A > E.

Additionally, B is shorter than E, which gives the relation E > B.

Combining these relations with C being the tallest, the complete descending order of height is: C > D > A > E > B

With five boys in total, the person in the middle (third position) of this ordered sequence is A.

Explanation

To arrange the words in alphabetical order as they appear in a dictionary, we compare them letter by letter from left to right. All four words begin with the same prefix Trea. Comparing the fifth letter of each word, Treacherous has c, Treadmill and Tread have d, and Treason has s. Since c comes first alphabetically, Treacherous (iii) is the first word in the sequence. Next, we compare Tread (iv) and Treadmill (i). Since Tread is a shorter word that is a complete prefix of Treadmill, Tread (iv) comes before Treadmill (i). Finally, Treason (ii) with the fifth letter s comes last. This establishes the sequence as iii, iv, i, ii.

Explanation

The coding language uses a direct letter-to-digit mapping based on the given words: R is coded as 1 I is coded as 2 V is coded as 3 E is coded as 5 D is coded as 6

By substituting these assigned values into the word DRIVER: D becomes 6 R becomes 1 I becomes 2 V becomes 3 E becomes 5 R becomes 1

Combining these digits in order yields 612351.

Explanation

In each column of the grid, the sum of the square roots of the numbers in the first two rows is equal to the number in the third row.

For the first column: √49 + √81 = 7 + 9 = 16

For the second column: √169 + √144 = 13 + 12 = 25

Similarly, for the third column: √484 + √625 = 22 + 25 = 47

Explanation

Replacing the mathematical signs in the given expression with their new meanings as specified: × becomes ÷

• becomes - becomes × ÷ becomes +

The original expression: 126 × 14 + 7 - 3 ÷ 2

Substituting the symbols gives: 126 ÷ 14 - 7 × 3 + 2

Applying the BODMAS rule (Division, Multiplication, Addition, and Subtraction):

First, perform the division: 126 ÷ 14 = 9

Now substitute this back: 9 - 7 × 3 + 2

Next, perform the multiplication: 7 × 3 = 21

Substitute this back: 9 - 21 + 2

Finally, perform the addition and subtraction: 9 - 21 + 2 = 11 - 21 = -10

Explanation

Placing the letters c, d, b, d, and a sequentially into the blanks of the given series completes a repeating pattern.

The filled series becomes: dcba dcba dcba

This reveals a clear pattern where the four-letter group dcba is repeated continuously three times.

Explanation

Let the starting point be at the origin (0, 0).

Neeraj starts by facing North and then turns 45° to his right, which points him in the North-East direction. He walks 25 m in this direction. The horizontal (East) and vertical (North) components of this movement are both equal to 25 × sin(45°) = 25 / √2 ≈ 17.68 m. This puts his position at (17.68, 17.68).

Next, he turns and walks 25 m in the South-East direction. The components for this movement are 25 × sin(45°) = 17.68 m towards the East and 17.68 m towards the South. Adding these to his previous position gives a new position of (17.68 + 17.68, 17.68 - 17.68) = (35.36, 0). At this point, he is directly on the East axis relative to the starting point.

Finally, he walks 25 m further to the East, making his final position (35.36 + 25, 0) = (60.36, 0). Since his vertical position is 0, he is located directly to the East of his original starting point.

Explanation

To find the correct set of numbers for the word EAGER, each letter is represented first by its row number and then by its column number:

The first letter E is located at row 0 and column 2, which is 02.

The second letter A is located at row 1 and column 0, which is 10.

The third letter G is located at row 6 and column 5, which is 65.

The fourth letter E is located at row 1 and column 1, which is 11.

The fifth letter R is located at row 8 and column 5, which is 85.

Combining these codes gives the sequence 02, 10, 65, 11, 85.

Explanation

Ankit's grandfather's son is Ankit's father. The daughter of Ankit's father is Ankit's sister. The son of Ankit's sister is Ankit's nephew. Therefore, the boy is Ankit's nephew.

Explanation

The relationship in the given analogy is based on synonyms. Pernicious and lethal are synonymous terms that both mean highly destructive, harmful, or deadly. Applying the same logic, indict means to formally charge or accuse someone of a serious crime, making accuse its synonym.

Explanation

The relationship between the pairs of letters is based on opposite positions in the English alphabet, where the sum of the forward and backward positions of corresponding letters is 27.

In FG : UT, F is the 6th letter from the start and U is the 6th letter from the end (6 + 21 = 27). Similarly, G is the 7th letter from the start and T is the 7th letter from the end (7 + 20 = 27).

For HI: H is the 8th letter from the start, so its corresponding opposite letter is S, which is the 8th letter from the end (8 + 19 = 27). I is the 9th letter from the start, so its corresponding opposite letter is R, which is the 9th letter from the end (9 + 18 = 27).

Explanation

The letter analogy is based on a constant addition shift between the letters of each pair.

Comparing the second part of the analogy, QR : WX, we can analyze the positions of the letters in the English alphabet: Q (17) shifts by +6 to become W (23). R (18) shifts by +6 to become X (24).

Applying this same logic to the first part of the analogy, ? : LM, we subtract 6 from the alphabetical positions of L and M to find the first term: L (12) shifts back by 6 to become F (6). M (13) shifts back by 6 to become G (7).

This gives the pair FG : LM.