SSC CHSL Tier 1 2011 General Intelligence & Reasoning Questions with Solutions

Explanation

Defy and Obey are antonyms, representing opposite concepts. Following the same logical relationship, the antonym of Rest is Work.

Explanation

The analogy is based on the primary physical action or mode of locomotion associated with a specific medium. One swims in water to move from one place to another. Similarly, on land, the primary and standard physical mode of locomotion to move from one place to another is walking. Thus, walk is the correct term to complete the analogy.

Explanation

The relationship in the pair Patient : Doctor is that of a seeker of services or guidance and the professional who provides that care or treatment. A patient goes to a doctor to seek professional medical advice and treatment. Similarly, a student goes to an advisor to seek professional academic or career guidance and advice. Both pairs exhibit the identical relationship of a seeker of guidance and the professional provider.

Explanation

The letters in the first term are incremented by one position in the alphabetical sequence to obtain the corresponding letters in the second term.

A + 1 = B N + 1 = O

Applying the same logic to the third term:

C + 1 = D P + 1 = Q

Explanation

The relationship between the first pair of letter groups is established by shifting the alphabetical positions of each letter. For the first letter, there is a forward shift of one position (D + 1 = E). For the second letter, there is a backward shift of one position (D - 1 = C). For the third letter, there is also a backward shift of one position (W - 1 = V).

Applying this same pattern to the letter group FBU, shifting the first letter F by +1 gives G, shifting the second letter B by -1 gives A, and shifting the third letter U by -1 gives T. This yields the letter group GAT.

Explanation

The relationship between the letter groups is established by shifting the positions of the letters in the alphabetical order.

For the first three letters of the group, each letter is shifted forward by one position (+1): B + 1 = C C + 1 = D D + 1 = E

For the fourth letter of the group, it is shifted backward by four positions (-4): Z - 4 = V

Applying this identical pattern to the letter group DEFT: D + 1 = E E + 1 = F F + 1 = G T - 4 = P

This yields the letter group EFGP.

Explanation

The relationship between the numbers is based on the squares of consecutive decreasing integers.

The first number is 196, which is the square of 14 (14²). The second number is 169, which is the square of 13 (13²), where 13 is one less than 14.

Applying the same rule to the third number: The third number is 81, which is the square of 9 (9²). The next number must be the square of one less than 9, which is 8² = 64.

Explanation

The analogy follows the pattern of n³ + n for consecutive integers n.

In the second pair, the numbers are: 130 = 5³ + 5 222 = 6³ + 6

Here, the base numbers are consecutive integers 5 and 6.

Applying the same logic to the first pair: 30 = 3³ + 3

Since the next consecutive integer after 3 is 4, the missing term is: 4³ + 4 = 64 + 4 = 68

Explanation

The relationship between the first and the second group is that each number in the first group is the square of the corresponding number in the second group.

In the first pair, the relationship is: 2² = 4 4² = 16 2² = 4 Thus, (2, 4, 2) corresponds to (4, 16, 4).

Applying the same pattern to the second pair with (3, 9, 3): 3² = 9 9² = 81 3² = 9

This gives the sequence 9, 81, 9.

Explanation

An eraser is used for erasing or removing marks from paper or other surfaces. This distinguishes it from the others, which are all tools designed to apply marks, write, or draw.

Explanation

The Moon is a natural satellite that orbits a planet, whereas the other celestial bodies in the group are classified as planets orbiting the Sun.

Explanation

Uncivil is an adjective that describes a rude, impolite, or socially unacceptable behavioral trait, whereas the other three terms are nouns directly related to the institutions, processes, and systems of political governance. This makes it both grammatically and conceptually distinct from the rest.

Explanation

The letter E is a vowel, while the rest of the letters are consonants. This classification makes E the odd one out.

Explanation

The letter combination QNO is the odd one out because it does not follow the constant letter-spacing pattern of the rest. In the standard pattern of these combinations, the first letter shifts back by three positions to get the second letter, which then shifts forward by two positions to get the third letter. For QNO, the letters have alphabetical positions of Q = 17, N = 14, and O = 15. While the step from Q to N is -3, the step from N to O is only +1 instead of the required +2.

Explanation

QRST consists of four consecutive letters in standard alphabetical order with a constant difference of +1 between successive letters (Q, R, S, T). In contrast, the other letter groups follow a +3, -2, +1 position progression, making QRST the odd one out.

Explanation

The number 21 is an odd number, whereas the other three numbers are all even numbers. This mathematical property distinguishes it from the rest of the group.

Explanation

In the number pair 52 - 62, the absolute difference between the two numbers is 10, whereas in the other pairs the absolute difference is 8.

Explanation

In C, the second number is not the reverse of the digits of the first number, as the reverse of 96 is 69, not 68.

Explanation

To arrange the words in alphabetical order as they appear in an English dictionary, we compare them letter by letter from left to right.

All five words begin with the letters Ban.

Comparing the fourth letter of each word: Banal and Banana have a. Bandage and Bandit have d. Banish has i.

Since a comes before d, and d comes before i in the alphabet, the words with a as their fourth letter will appear first, followed by those with d, and finally the word with i.

To order Banal (1) and Banana (2), we look at their fifth letters, which are l and n respectively. Since l comes before n, Banal (1) comes before Banana (2).

To order Bandage (4) and Bandit (5), we look at their fifth letters, which are a and i respectively. Since a comes before i, Bandage (4) comes before Bandit (5).

Banish (3) is placed last because its fourth letter i comes after a and d.

Arranging all the words gives the sequential order 1, 2, 4, 5, 3.

Explanation

The chronological progression of human civilization and technology is classified by the primary materials and energy sources utilized in each era.

The sequence begins with the Stone Age, during which humans used stone tools.

This was followed by the Metallic Age, starting with the discovery and use of single, pure metals like copper.

Next came the Alloy Age, when humans began combining different metals to create stronger materials, notably bronze and steel.

The sequence culminates with the Atomic Age, which began in the mid-20th century with the advent of nuclear technology and power.

This historical development gives the ascending order of Stone Age (3), Metallic Age (2), Alloy Age (4), and Atomic Age (1).

Explanation

The correct logical sequence represents the chronological steps from falling ill to recovering. First, a person contracts a disease (3). To seek treatment, they go to see a doctor (2). The doctor examines the patient to perform a diagnosis (4) and identify the illness. After diagnosing, the doctor prescribes the appropriate medicine (5). Finally, taking the medicine results in a cure (1) for the disease. This sequence of events naturally progresses in the order of 3, 2, 4, 5, 1.

Explanation

By substituting the letters b, a, d, d, c from the correct option into the respective blanks, the series becomes:

a b c d d a b c d d a b c d d a b c

The series follows a repeating pattern of the five-letter group: a b c d d. This pattern repeats sequentially to complete the given series.

Explanation

The given series follows a pattern where each letter in a term increases by 2 positions in alphabetical order to form the corresponding letter in the next term.

For the first letter of each term, E + 2 is G, G + 2 is I, and I + 2 is K.

For the second letter of each term, A + 2 is C, C + 2 is E, and E + 2 is G.

For the third letter of each term, C + 2 is E, E + 2 is G, and G + 2 is I.

Combining these letters yields the next term in the series as KGI.

Explanation

The given series consists of the squares of consecutive odd numbers. The terms can be written as:

1² = 1 3² = 9 5² = 25

Following this pattern, the next term must be the square of the next consecutive odd number, which is 7:

7² = 49

The subsequent term confirms the pattern:

9² = 81

Explanation

The differences between consecutive terms of the series form an arithmetic progression of multiples of 3.

The difference between the first and second term is 6 - 3 = 3. The difference between the second and third term is 12 - 6 = 6. The difference between the third and fourth term is 21 - 12 = 9.

Following this pattern of adding consecutive multiples of 3, the next difference must be 12. Adding 12 to 21 gives the missing term: 21 + 12 = 33

To verify the pattern, adding the next multiple of 3, which is 15, to 33 yields 48: 33 + 15 = 48

This perfectly matches the last term in the given series.

Explanation

The terms in the series follow the pattern of adding 2 to the square of consecutive natural numbers, given by the formula n² + 2 for n = 1, 2, 3, and so on.

Calculating the terms: For n = 1: 1² + 2 = 3 For n = 2: 2² + 2 = 6 For n = 3: 3² + 2 = 11 For n = 4: 4² + 2 = 18 For n = 5: 5² + 2 = 27 For n = 6: 6² + 2 = 38

The fourth term in the given series is 16, whereas the correct term according to the pattern should be 18.

Explanation

The term "his brother's father" refers directly to the man's own father.

The term "the only son of my grandfather" refers to the woman's father, assuming paternal lineage.

Since the man's father is the same individual as the woman's father, they share the same father. This makes the woman the sister of the man.

Explanation

Let the amount of money held by each person be represented by their respective letters.

The first condition states that F has less money than H but more than G: G < F < H

The second condition states that E has more than F but less than H: F < E < H

Combining these two inequalities, we obtain the relative order of wealth: G < F < E < H

This sequence shows that G has the minimum amount of money.

Explanation

The word CUSTOM cannot be formed from the word SPECTRUM because it contains the letter O, which is not present in the letters of the word SPECTRUM.

Explanation

The given letters U (1), B (2), A (3), N (4), and R (5) can be rearranged to form the meaningful English word URBAN. Matching the letters of the word URBAN with their corresponding numbers gives the sequence: U (1), R (5), B (2), A (3), and N (4), which corresponds to 1 5 2 3 4.

Explanation

By mapping each letter in the word APPRECIATION to its corresponding digit in the given code, we establish a direct substitution scheme:

A = 1 P = 7 R = 8 E = 3 C = 2 I = 4 T = 9 O = 6 N = 5

Applying this direct letter-to-digit mapping to the word PERCEPTION yields:

P = 7 E = 3 R = 8 C = 2 E = 3 P = 7 T = 9 I = 4 O = 6 N = 5

This gives the code 7382379465.

Explanation

The given equation has placeholder signs to be replaced by the correct mathematical operators: 16 _ 2 _ 24 _ 3 _ 6

Using the operators in option D, which sequentially represent -, -, ÷, and =, we substitute them into the placeholders: 16 - 2 - 24 ÷ 3 = 6

According to the BODMAS rule, division is performed first: 24 ÷ 3 = 8

Now, substitute this result back into the equation: 16 - 2 - 8 = 6

Next, perform the subtraction operations from left to right: 16 - 2 = 14 14 - 8 = 6

This balances the equation as the left-hand side is equal to the right-hand side (6 = 6).

Explanation

The given equations follow a specific pattern of digit rearrangement. For any sequence of three numbers in the format a - b - c, the result is formed by placing the second number first, followed by the third number, and then the first number. This yields the combined sequence bca.

Applying this pattern: In 6 - 9 - 2, rearranging as bca yields 926. In 3 - 2 - 1, rearranging as bca yields 213.

Following the same logic for the unsolved equation 0 - 4 - 8: Here, a = 0, b = 4, and c = 8. Rearranging these digits in the order bca gives 480.

Explanation

Interchanging the minus (-) and division (÷) signs in the given equation yields:

30 ÷ 6 - 4 + 2 × 3

Using the BODMAS rule, perform division first: 30 ÷ 6 = 5

This simplifies the expression to: 5 - 4 + 2 × 3

Next, perform multiplication: 2 × 3 = 6

The expression becomes: 5 - 4 + 6

Finally, perform addition and subtraction: 5 - 4 + 6 = 1 + 6 = 7

This equals the right-hand side of the equation.

Explanation

The given sequence of numbers can be divided into three distinct groups of three numbers each: Group 1: 16, 4, 4 Group 2: 81, 3, 27 Group 3: ?, 25, 5

In each group, the first number is the product of the second and third numbers.

For the first group: 4 × 4 = 16

For the second group: 3 × 27 = 81

Following this pattern for the third group: 25 × 5 = 125

Explanation

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

In the first column: 6 × 3 × 2 = 36

In the second column: 4 × 6 × 3 = 72

Following the same pattern for the third column: 5 × 5 × 4 = 100

Explanation

The taxi driver starts from a point and travels 10 km North. He then turns left, which directs him towards the West, and drives for 5 km. After this, he turns to his right, which redirects him back towards the North, and drives for another 10 km. At this point, the driver has covered a total distance of 25 km (10 km + 5 km + 10 km). Since his last turn was to the right from a westward heading, he is now facing and driving in the North direction. Additionally, relative to his starting point, his displacement is predominantly to the North (20 km North and only 5 km West), which corresponds to the North direction.

Explanation

The path traveled can be tracked by coordinates starting from home at (0, 0). Cycling 8 km southward reaches the point (0, -8). Turning right from a southward direction means heading West, so cycling 5 km West reaches (-5, -8). Turning right again means heading North, so cycling 8 km North reaches (-5, 0). Turning left means heading West, so cycling 10 km West reaches (-15, 0). The straight-line distance from (-15, 0) back to home at (0, 0) is the horizontal distance, which is 5 km + 10 km = 15 km.

Explanation

The coding pattern divides the six-letter word into two equal halves of three letters each, and then reverses the order of the letters in each half.

For the word MASTER, the first half MAS is reversed to SAM, and the second half TER is reversed to RET, which combines to form SAMRET.

Applying this same logic to the word CARROT, the first half CAR is reversed to RAC, and the second half ROT is reversed to TOR. Combining these two halves yields RACTOR.

Explanation

Let us orient the row from left to right, where right represents the southern direction for individuals facing East.

We are given that C is between A and E, which implies the sequence is either A-C-E or E-C-A.

We also know that B is just to the right of E. Since B must be immediately to the right of E, the E-C-A sequence is eliminated because E is adjacent to C in that case. Thus, the order must be A-C-E-B.

Furthermore, B is to the left of D, which means D must be placed to the right of B, extending the sequence to A-C-E-B-D.

Since there are six friends in total and we are told that F is not at the right end, F must be positioned at the extreme left end. This establishes the complete sequence from left to right as F-A-C-E-B-D.

This places D at the right end of the row.

Explanation

A cube of side n = 4 inches is cut into 1 inch cubes. The cubes having only Red and Green faces must have exactly two painted faces, which lie along the edges where a Red face meets a Green face.

A cube has 12 edges in total. Since opposite faces are painted the same color, the pair of Red faces and the pair of Green faces meet at exactly 4 edges.

The number of cubes with exactly two painted faces along any edge of length n is given by the formula n - 2.

For n = 4, the number of such cubes along each edge is:

4 - 2 = 2

Since there are 4 edges where Red and Green faces intersect, the total number of cubes with only Red and Green faces is:

4 × 2 = 8

Explanation

The given statement states that many people feel nervous when giving a talk before a group. This statement only provides information about a certain segment of people who experience nervousness. It does not provide any logical basis or statistical data regarding the remaining population's ability to speak confidently. Therefore, we cannot conclusively deduce whether many people can talk confidently or if only very few people can do so. Since both conclusions require making assumptions that go beyond the scope of the given statement, neither conclusion follows.

Explanation

Blue is Black indicates that Blue and Black represent equivalent sets (Blue = Black). Consequently, any property of Black applies to Blue.

From Statement (1), we have some Black is Red. Since Blue = Black, this implies some Blue is Red. Given Statement (2) that All Red is Green, it logically follows that some Blue is Green. Hence, Conclusion I follows.

From Statement (1), some Black is Red means there is an overlap between Black and Red. Statement (2) asserts All Red is but not Yellow, which means No Red is Yellow. Thus, the portion of Black that is Red cannot be Yellow. This directly means Some Black is not Yellow. Hence, Conclusion III follows.

Conclusion II is invalid because we only know that the part of Black which is Red is not Yellow; we cannot definitively state that no Black at all is Yellow. Conclusion IV is invalid because since some Black is Red and all Red is Green, some Black must be Green.

Explanation

To represent the word LAMB, we identify the row and column coordinates for each letter from the respective matrices.

The first letter L is located at the intersection of row 7 and column 5 in Matrix II, which corresponds to the code 75.

The second letter A is located at the intersection of row 2 and column 1 in Matrix I, which corresponds to the code 21.

The third letter M is located at the intersection of row 1 and column 3 in Matrix I, which corresponds to the code 13.

The fourth letter B is located at the intersection of row 4 and column 5 in Matrix II, which corresponds to the code 45.

Putting these codes together in sequence yields 75, 21, 13, 45.

Explanation

The relationship in the analogy is based on biological reproduction and offspring origin. A hen produces an egg, which contains the embryo that develops into a new hen. In the same manner, a tree produces a seed, which contains the plant embryo that germinates and grows into a new tree. Both the egg and the seed serve as the fundamental starting points for the propagation and life cycle of their respective parent organisms.

Explanation

The relationship in the analogy is between the tool and the body part it is used on. A nail cutter is used to trim nails, and a Gillette (spelled as Gillet) razor is used to shave hair on the head or face. Therefore, Head is the correct option.

Explanation

The relationship in this analogy is that of a whole to its constituent part. A window is structurally made up of individual components called panes. In the same way, a book is structurally composed of individual sheets or parts called pages.

Explanation

The pattern of the analogy is determined by shifting the position of each letter in the alphabetical order. Comparing the first term DHPV to the second term EGQU, the letters are shifted by:

D + 1 = E H - 1 = G P + 1 = Q V - 1 = U

Applying this alternating pattern of adding 1 and subtracting 1 to the third term BJNT:

B + 1 = C J - 1 = I N + 1 = O T - 1 = S

This yields the letters CIOS.

Explanation

The relationship in the first pair is based on powers of the same base number. The first number is 7² = 49 and the second number is 7³ = 343. Following the same logic for the second pair, since the first number is 8² = 64, the missing number must be 8³ = 512.

Explanation

Each letter is replaced by its opposite letter from the alphabet, where A pairs with Z, B with Y, and C with X. Under this rule, x is replaced by c, y is replaced by b, and z is replaced by a. Applying this pattern to the letters in xyyzzy, x becomes c, the first y becomes b, the second y becomes b, the first z becomes a, the second z becomes a, and the final y becomes b. This sequence of replacements produces the word cbbaab.