SSC CHSL Tier 1 2023 General Intelligence & Reasoning Questions with Solutions

Explanation

Comparing the two coded statements: mother teaches science is written as 32 48 6@ father teaches science is written as 48 6@ #

The common words in both sentences are teaches and science, which correspond to the common codes 48 and 6@. Removing these common terms from the second sentence leaves the word father, which must correspond to the remaining code #.

Explanation

The relation between the first and second number in the group is defined by the formula y = x² - 1, where x represents the first number and y represents the second number. For the pair 18 - 325, applying this formula yields 18² - 1 = 323, which does not equal 325. This makes it the odd one out as it fails to follow the pattern shared by the other pairs.

Explanation

The series decreases by subtracting consecutive perfect squares starting from 2².

The differences between consecutive terms are: 999 - 995 = 4 = 2² 995 - 986 = 9 = 3² 986 - 970 = 16 = 4² 970 - 945 = 25 = 5²

Following this pattern, the next number in the series is obtained by subtracting 6² from the last term: 945 - 6² = 945 - 36 = 909

Explanation

The pattern followed in the pairs is (First number * 9) - 7 = Second number. Applying this logic, we get 11 * 9 - 7 = 92, 17 * 9 - 7 = 146, and 21 * 9 - 7 = 182, whereas 31 * 9 - 7 = 272, making 31:284 the odd one out.

Explanation

The series consists of five terms, each containing four letters with one missing letter represented by a blank or dot. The blanks appear in the following order: First blank: Second position of the first term (W.KY) Second blank: First position of the second term (ENC) Third blank: Third position of the third term (YG.G) Fourth blank: Fourth position of the fourth term (ZIT) Fifth blank: First position of the fifth term (_KWO)

By examining each of the four letter positions across the five terms, the following arithmetic progression patterns emerge:

For the first letter position, the pattern is +1: W (23) → X (24) → Y (25) → Z (26) → A (1). Thus, the second blank is X and the fifth blank is A.

For the second letter position, the pattern is +2: C (3) → E (5) → G (7) → I (9) → K (11). Thus, the first blank is C.

For the third letter position, the pattern is +3: K (11) → N (14) → Q (17) → T (20) → W (23). Thus, the third blank is Q.

For the fourth letter position, the pattern is +4: Y (25) → C (3) → G (7) → K (11) → O (15). Thus, the fourth blank is K.

Arranging the missing letters in the sequence of their blanks yields CXQKA.

Explanation

Original word: S T R A N G E

Alphabetical order: A E G N R S T

Comparing the letters at each position from left to right: First position: S and A (changed) Second position: T and E (changed) Third position: R and G (changed) Fourth position: A and N (changed) Fifth position: N and R (changed) Sixth position: G and S (changed) Seventh position: E and T (changed)

None of the letters remain in their original positions after alphabetical sorting.

Explanation

Correct Answer: D

The relationship between the numbers in each given pair follows the formula: Second number = (First number)³ - 5

Applying this formula to the given pairs: 3³ - 5 = 27 - 5 = 22 6³ - 5 = 216 - 5 = 211

Applying this same relationship to the numbers in option D: 4³ - 5 = 64 - 5 = 59

Explanation

The series is formed by dividing the English alphabet into consecutive groups of four letters, with the positions of the last two letters in each group interchanged (following the pattern 1st, 2nd, 4th, 3rd):

Group 1: A, B, C, D → A B D C (missing letter: B) Group 2: E, F, G, H → E F H G (missing letter: E) Group 3: I, J, K, L → I J L K (missing letter: L) Group 4: M, N, O, P → M N P O (missing letter: M) Group 5: Q, R, S, T → Q R T S (missing letter: S)

Combining these groups gives the continuous sequence: A B D C E F H G I J L K M N P O Q R T S

By sequentially placing the letters B, E, L, M, and S into the blanks, the pattern is successfully completed.

Explanation

E is the mother of D, because D is the son of E and M is E's husband. A is the mother of E. Since A is married to T, and A is female, T is the husband of A, which makes T the father of E. Since E is the mother of D and T is the father of E, T is the mother's father of D.

Explanation

The relation between the first number x and the second number y in each pair is defined by the formula:

y = 8 × (x - 1)

Applying this formula to the first given set (63, 496): 8 × (63 - 1) = 8 × 62 = 496

Applying this formula to the second given set (42, 328): 8 × (42 - 1) = 8 × 41 = 328

Applying the same logic to the pair (48, 376): 8 × (48 - 1) = 8 × 47 = 376

Explanation

The pair 9:742 does not follow the common pattern shared by the other pairs, which is based on the formula y = x³ + 11, where x is the first number and y is the second number. For 9:742, the calculation is 9³ + 13 = 729 + 13 = 742, requiring the addition of 13 instead of 11, making it the odd one out.

Explanation

By comparing the two coded statements, we can identify the common elements: In the first statement, 'can you speak' is written as 'pr it sq'. In the second statement, 'you work hard' is written as 'sq wp mq'.

The word 'you' is the only common word between the two statements, and the code 'sq' is the only common code between the two code groups. Thus, 'you' is represented by 'sq'.

Explanation

By representing the statements using set theory: Let B be the set of bags, K be the set of keys, P be the set of pots, and L be the set of lamps.

From the statements, B is a subset of P, and K is a subset of P. Additionally, the intersection of L and P is an empty set, which means L and P are completely disjoint.

Since K is entirely contained within P, and P has no elements in common with L, K and L must also be completely disjoint. This confirms that no keys are lamps, making conclusion (II) logically certain.

Because B and K are independent subsets within P, they do not necessarily intersect. Thus, we cannot definitively conclude that some bags are keys, meaning conclusion (I) does not logically follow.

Explanation

The given series can be divided into five groups of four letters each, moving backward through the alphabet from Z to A:

Group 1: [Z] X W Y (using letters Z, Y, X, W, with V and U skipped) Group 2: T S [R] Q (using letters T, S, R, Q, with P skipped) Group 3: [L] O N M (using letters O, N, M, L, with K skipped) Group 4: J [I] H G (using letters J, I, H, G, with F skipped) Group 5: E D [A] B (using letters E, D, B, A, with C skipped)

By sequentially placing the letters Z, R, L, I, and A in the blanks, the series is completed.

Explanation

In the expression V ÷ W + X - Y × Z, the relationships are decoded as follows:

Y × Z means Y is the sister of Z.

X - Y means X is the father of Y, which means X is also the father of Z.

W + X means W is the wife of X, which makes W the mother of Z.

V ÷ W means V is the brother of W.

Since W is the mother of Z and V is the brother of W, V is the mother's brother of Z.

Explanation

The logic followed in the given pairs is to find the square root of the first number and then subtract 2 from it to get the second number.

For the first pair: √169 = 13 13 - 2 = 11

For the second pair: √625 = 25 25 - 2 = 23

Applying the same logic to 961: √961 = 31 31 - 2 = 29

Explanation

The series follows a pattern where each subsequent letter increases by 2 in its alphabetical position.

Converting the given letters to their numerical positions in the English alphabet: D = 4 F = 6 L = 12 P = 16 V = 22

By adding 2 to each term to find the missing positions: 4 + 2 = 6 (F) 6 + 2 = 8 (H) 8 + 2 = 10 (J) 10 + 2 = 12 (L) 12 + 2 = 14 (N) 14 + 2 = 16 (P) 16 + 2 = 18 (R) 18 + 2 = 20 (T) 20 + 2 = 22 (V) 22 + 2 = 24 (X)

This gives the sequence of even-numbered alphabetical positions: 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24. Replacing the numbers with their corresponding letters yields the missing letters H, J, N, R, T, X in sequence.

Explanation

The code for each word is determined by adding the positional values of its letters in the alphabetical order (A = 1, B = 2, ..., Z = 26) and then adding the total number of letters in the word to this sum.

For TARNISH: Positional sum: 20 + 1 + 18 + 14 + 9 + 19 + 8 = 89 Number of letters: 7 Total value: 89 + 7 = 96

For CORRECT: Positional sum: 3 + 15 + 18 + 18 + 5 + 3 + 20 = 82 Number of letters: 7 Total value: 82 + 7 = 89

Applying the same logic to GENERAL: Positional sum: 7 + 5 + 14 + 5 + 18 + 1 + 12 = 62 Number of letters: 7 Total value: 62 + 7 = 69

Explanation

The series is an alternating series composed of two distinct arithmetic progressions.

The first progression consists of the terms at the odd positions: 84, 91, ?, 105. The terms in this sequence increase by 7: 84 + 7 = 91 91 + 7 = 98 98 + 7 = 105

The second progression consists of the terms at the even positions: 90, 99, 108. The terms in this sequence increase by 9: 90 + 9 = 99 99 + 9 = 108

Explanation

Each letter in the three-letter groups follows a specific arithmetic progression based on its alphabetical position where A = 1, B = 2, and so on up to Z = 26.

For the first letter of each term: O (15) + 6 = U (21) U (21) + 6 = A (27, which wraps around to 1) A (1) + 6 = G (7) G (7) + 6 = M (13)

For the second letter of each term: C (3) + 4 = G (7) G (7) + 4 = K (11) K (11) + 4 = O (15) O (15) + 4 = S (19)

For the third letter of each term: J (10) + 2 = L (12) L (12) + 2 = N (14) N (14) + 2 = P (16) P (16) + 2 = R (18)

Combining these letters yields MSR.

Explanation

The day of the week on 27 July 1963 is Saturday, which is calculated by finding the total number of odd days (9 odd days, which simplifies to 2 odd days) between 14 May 1953 and 27 July 1963, and adding them to Thursday.

Explanation

For the number pairs (1), (3), and (4), the relation between the first number x and the second number y follows the logic y = 2x - 3.

Specifically: 39 × 2 - 3 = 75 55 × 2 - 3 = 107 64 × 2 - 3 = 125

For pair (2), this rule is violated as 43 × 2 - 3 = 83, whereas the given number is 82. It instead follows the rule 43 × 2 - 4 = 82, which makes it the odd one out.

Explanation

The words in the given pair, Cancel and Drop, are synonyms as both refer to the act of calling off, abandoning, or terminating something. Similarly, Cackle and Giggle are synonyms because both refer to different types of laughter. This establishes a synonymous relationship between the words in both pairs.

Explanation

The letters of the word STRANGE are S, T, R, A, N, G, E. Arranging these letters in alphabetical order gives the sequence: A, E, G, N, R, S, T.

In this new sequence, the fourth letter from the left is N, and the second letter from the right is S.

The letters present between N and S in the standard English alphabetical series are O, P, Q, and R. Counting these letters gives a total of four letters.

Explanation

By decoding the letter representations to standard mathematical operations, we determine that A stands for division (÷), B stands for multiplication (×), C stands for addition (+), and D stands for subtraction (-).

Substituting these operators into the given expression: 67 + 429 ÷ 11 × 5 - 85

Applying the BODMAS rule, we perform division first: 429 ÷ 11 = 39

Next, we perform the multiplication: 39 × 5 = 195

Now, substitute this back into the expression: 67 + 195 - 85

Finally, perform the addition and subtraction: 262 - 85 = 177

Explanation

The series follows an alternating pattern of mathematical operations: multiplying by 2 and adding 3.

8 × 2 = 16 16 + 3 = 19 19 × 2 = 38 38 + 3 = 41 41 × 2 = 82

Following this sequence, adding 3 to 16 gives 19, which when multiplied by 2 correctly yields the next term, 38.

Explanation

By Statement 1, all Dances are Art. By Statement 3, some Dances are Groups. Since some Groups are Dances, and all Dances are Art, those Groups that are Dances must also be Art. Therefore, some Groups are definitely Art, which validates Conclusion (II).

For Conclusion (I), Statement 2 states that some Walls are Art. Since Dances is simply a subset of Art, there is no necessary overlap between Walls and Dances. Thus, Conclusion (I) does not logically follow.

Explanation

The relationship between the numbers in each pair is based on a constant difference.

In the first pair: 352 + 179 = 531

In the second pair: 271 + 179 = 450

Following the same pattern, we add 179 to the fifth number to get the related number: 725 + 179 = 904

Explanation

The code language is based on shifting each letter forward by 7 positions in the alphabetical order, where Z wraps around to A.

Assigning numerical values to the letters based on their alphabetical positions, with A = 1, B = 2, up to Z = 26:

For BFGD to IMNK: B (2) + 7 = 9 (I) F (6) + 7 = 13 (M) G (7) + 7 = 14 (N) D (4) + 7 = 11 (K)

Applying this shift of +7 to GKLI: G (7) + 7 = 14 (N) K (11) + 7 = 18 (R) L (12) + 7 = 19 (S) I (9) + 7 = 16 (P)

This gives the coded word NRSP.