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

Explanation

The relationship between the letter groups is established by shifting each letter forward by 6 positions in the English alphabetical order.

Applying this addition of 6 to the alphabetical positions of the letters in HKLJ: H (8) + 6 = N (14) K (11) + 6 = Q (17) L (12) + 6 = R (18) J (10) + 6 = P (16)

Applying the same constant shift of +6 to the letters of MPQO: M (13) + 6 = S (19) P (16) + 6 = V (22) Q (17) + 6 = W (23) O (15) + 6 = U (21)

This yields the letter group SVWU.

Explanation

The pair 25:177 is the odd pair because it does not follow the mathematical relation where the second number is obtained by multiplying the first number by 7 and then subtracting 2. Applying this rule to the first number, 25, yields 25 × 7 - 2 = 173, whereas the given second number in the pair is 177.

Explanation

The common pattern of the group involves moving 4 positions backward from the first letter to the second letter, and then 6 positions forward from the second letter to the third letter. For the letter combination HDC, H is the 8th letter, D is the 4th letter, and C is the 3rd letter. Moving from H to D is a decrease of 4 positions, but moving from D to C is a decrease of 1 position, which violates the +6 pattern shared by the others.

Explanation

Correct Answer: D

To determine the relationship between Q and P, we decode the relevant relations from the given expression: P×Q-R÷S+T.

The segment P×Q indicates that P is the mother of Q. The segment Q-R indicates that Q is the father of R, which establishes that Q is male.

Since P is the mother of Q and Q is male, it directly follows that Q is the son of P.

Explanation

The relationship is based on reversing the order of the letters in each letter group.

When the letters of JFM are written in reverse order, it becomes MFJ.

Following the same pattern, reversing the letters of NKT results in TKN.

Explanation

The word NETWORK has seven letters: N, E, T, W, O, R, and K.

Arranging these letters in alphabetical order gives the sequence: E, K, N, O, R, T, W.

In this arranged sequence, the letter fourth from the left is O, and the letter second from the right is T.

The letters in the English alphabetical series that lie between O and T are P, Q, R, and S. Counting these letters, there are exactly 4 letters between O and T.

Explanation

The relationship between the numbers follows the pattern where the second number is obtained by multiplying the first number by 3 and then adding 1.

Using the formula: Second Number = (First Number × 3) + 1

For the first pair: (31 × 3) + 1 = 93 + 1 = 94

For the second pair: (37 × 3) + 1 = 111 + 1 = 112

Applying the same logic to 63: (63 × 3) + 1 = 189 + 1 = 190

Explanation

The given series is an alternating series consisting of two separate arithmetic progressions.

The first sub-series consists of the terms at the odd positions (1st, 3rd, 5th, and 7th terms): 141, 143, 145, ... In this sub-series, each term increases by 2: 141 + 2 = 143 143 + 2 = 145 145 + 2 = 147

The second sub-series consists of the terms at the even positions (2nd, 4th, and 6th terms): 152, 155, 158, ... In this sub-series, each term increases by 3: 152 + 3 = 155 155 + 3 = 158

Since the missing number is at the 7th position, it belongs to the first sub-series. Adding 2 to the 5th term gives 145 + 2 = 147.

Explanation

The series consists of five 4-letter terms where each subsequent term is obtained by applying the constant pattern of (+3, -1, +3, -1) to the alphabetical positions of the letters of the preceding term:

Term 1: C N W F Term 2: F M Z E (C + 3 = F, N - 1 = M, W + 3 = Z, F - 1 = E) Term 3: I L C D (F + 3 = I, M - 1 = L, Z + 3 = C, E - 1 = D) Term 4: L K F C (I + 3 = L, L - 1 = K, C + 3 = F, D - 1 = C) Term 5: O J I B (L + 3 = O, K - 1 = J, F + 3 = I, C - 1 = B)

By filling the blanks in sequence with the letters W, M, D, L, and B, the logical series is completed.

Explanation

L is the daughter of H, and J is the son of L and I (where L is married to I). Since J is married to M (who is female), J is male. Therefore, J is the son of H's daughter L, making J the daughter's son of H.

Explanation

Let B represent buses, M represent motorbikes, V represent vans, and C represent cars.

Since some buses are motorbikes (B ∩ M ≠ ∅) and all motorbikes are vans (M ⊆ V), there is a common intersection between buses and vans, meaning some buses are vans, which conversely means some vans are buses. This validates conclusion II.

Since all motorbikes are vans, the set of motorbikes is a subset of vans. For non-empty sets, this relation implies that the intersection of vans and motorbikes is non-empty, meaning some vans are motorbikes. This validates conclusion III.

Since some buses are vans and all buses are cars (B ⊆ C), the intersection of cars and vans must also contain this common element, meaning some cars are vans. This validates conclusion I.

Explanation

The given sequence is 16, 19, 25, 34, 46, X.

Analyzing the differences between consecutive terms: 19 - 16 = 3 25 - 19 = 6 34 - 25 = 9 46 - 34 = 12

The differences form an arithmetic progression of multiples of 3: 3, 6, 9, 12. Following this pattern, the next difference must be 15.

Calculating the value of X: X = 46 + 15 = 61

Explanation

The given mathematical relationship is evaluated by interchanging the operators "+" with "×" and "-" with "÷" in the expression 53 + 4 × 21 - 7 ÷ 14:

53 × 4 + 21 ÷ 7 - 14

Applying the order of operations: First, division: 21 ÷ 7 = 3

Next, multiplication: 53 × 4 = 212

Finally, addition and subtraction: 212 + 3 - 14 = 215 - 14 = 201

Explanation

The code for each word is determined by the sum of the positional values of its letters in the English alphabetical order, where A = 1, B = 2, C = 3, and so on.

For DOG: D = 4, O = 15, G = 7 Sum = 4 + 15 + 7 = 26

For BIN: B = 2, I = 9, N = 14 Sum = 2 + 9 + 14 = 25

Applying the same logic to JAM: J = 10, A = 1, M = 13 Sum = 10 + 1 + 13 = 24

Explanation

The relation between the two numbers in each pair follows the pattern: first number = (second number × 4) - 16.

Applying this rule to the consistent pairs: 22 × 4 - 16 = 88 - 16 = 72 32 × 4 - 16 = 128 - 16 = 112 82 × 4 - 16 = 328 - 16 = 312

For the pair 216:40, applying the same logic yields: 40 × 4 - 16 = 160 - 16 = 144, which is not equal to 216.

Explanation

The letters represent mathematical operators as follows: M represents + P represents - V represents ÷ Z represents ×

Substituting these operators into the given equation: 81 + 46 - 72 ÷ 12 × 12

Applying the BODMAS rule:

Step 1: Division 72 ÷ 12 = 6 The expression becomes: 81 + 46 - 6 × 12

Step 2: Multiplication 6 × 12 = 72 The expression becomes: 81 + 46 - 72

Step 3: Addition 81 + 46 = 127 The expression becomes: 127 - 72

Step 4: Subtraction 127 - 72 = 55

Explanation

The relation between the three numbers (a, b, c) in each set follows the logic: b = (a × c) - 4.

For the first given set (12, 92, 8): (12 × 8) - 4 = 96 - 4 = 92

For the second given set (16, 92, 6): (16 × 6) - 4 = 96 - 4 = 92

Applying this logic to the set (9, 122, 14): (9 × 14) - 4 = 126 - 4 = 122

Explanation

To find the day of the week on 24 May 2012, calculate the total number of odd days between 12 April 2004 and 24 May 2012.

First, calculate the odd days between 12 April 2004 and 12 April 2012: Number of years = 2012 - 2004 = 8 years. Among these, the leap years containing 29 February are 2008 and 2012 (2004 is not counted as a leap year because 12 April 2004 is after February). Number of leap years = 2 (each having 2 odd days) Number of ordinary years = 6 (each having 1 odd day) Odd days from years = (2 × 2) + (6 × 1) = 10 odd days.

Next, calculate the odd days from 12 April 2012 to 24 May 2012: Remaining days in April = 30 - 12 = 18 days Days in May = 24 days Total days = 18 + 24 = 42 days Odd days from these days = 42 mod 7 = 0 odd days.

Total odd days = 10 + 0 = 10 odd days. To find the final number of odd days, divide by 7: 10 mod 7 = 3 odd days.

Starting from Monday and adding 3 odd days: Monday + 3 days = Thursday.

Explanation

By comparing the letters in the words HALF and FLAG, the common letters are F, L, and A.

Comparing their respective codes, 8041 and 4980, the common digits are 8, 0, and 4. This means the set of letters {F, L, A} corresponds to the set of digits {8, 0, 4}.

The remaining letter in FLAG is G, and the remaining digit in its code 4980 is 9. Therefore, the code for G is 9.

Explanation

The given series is an interleaved series consisting of two alternating patterns at the odd and even positions:

At the odd positions (1st, 3rd, 5th, 7th, 9th, 11th, 13th, 15th), we have the given letters: R, R, D, D, R, R, D, D... This forms a repeating pattern of RRDD.

At the even positions (2nd, 4th, 6th, 8th, 10th, 12th, 14th, 16th), which correspond to the blanks, filling them with Option D (RDDRDDRD) yields: R, D, D, R, D, D, R, D... This forms a repeating pattern of RDD.

Combining these two alternating series logically completes the sequence.

Explanation

By assigning alphabetical positions to the letters from A = 1 to Z = 26, the pattern shows that each letter in the second cluster is obtained by adding 10 to the alphabetical position of the corresponding letter in the first cluster.

For BFG : LPQ: B (2) + 10 = L (12) F (6) + 10 = P (16) G (7) + 10 = Q (17)

For HKM : RUW: H (8) + 10 = R (18) K (11) + 10 = U (21) M (13) + 10 = W (23)

Applying this same shift of +10 to MPO: M (13) + 10 = W (23) P (16) + 10 = Z (26) O (15) + 10 = Y (25)

This results in the pair MPO : WZY.

Explanation

The relationship between the three numbers in each triad is given by the formula: Third number = 2 × First number × Second number

For the first given triad (3 - 4 - 24): 2 × 3 × 4 = 24

For the second given triad (4 - 7 - 56): 2 × 4 × 7 = 56

Applying this relation to the triad 5 - 8 - 80: 2 × 5 × 8 = 80

Explanation

According to the third statement, some Baths are Tubs, meaning there is a common overlap between the set of Baths and the set of Tubs. The second statement states that all Tubs are Drums, which means the entire set of Tubs is contained within the set of Drums. Since the overlapping part of Baths and Tubs must also lie inside the set of Drums, there is guaranteed to be an overlap between Drums and Baths. This makes conclusion (II) logically and definitely true.

For conclusion (I), the statements only establish relationships between Salts and Baths, and between Baths and Tubs. There is no direct or necessary relationship defined between Salts and Tubs, meaning they may or may not overlap. Thus, conclusion (I) does not definitely follow.

Explanation

To find the day of the week on 17 June 2013 from 14 March 2007, we calculate the total number of odd days between these two dates.

First, we calculate the odd days between 14 March 2007 and 14 March 2013: The difference is 6 years (2013 - 2007 = 6). Within this period, 2008 and 2012 are leap years, while the other 4 are ordinary years. Odd days from 2 leap years = 2 × 2 = 4 odd days. Odd days from 4 ordinary years = 4 × 1 = 4 odd days. Total odd days = 4 + 4 = 8 odd days, which leaves a remainder of 1 when divided by 7. So, 14 March 2013 is 1 day ahead of Wednesday, which is Thursday.

Next, we calculate the odd days from 14 March 2013 to 17 June 2013: March: 17 remaining days (31 - 14), which gives 3 odd days (17 ÷ 7 leaves remainder 3) April: 30 days, which gives 2 odd days May: 31 days, which gives 3 odd days June: 17 days, which gives 3 odd days (17 ÷ 7 leaves remainder 3) Total odd days = 3 + 2 + 3 + 3 = 11 odd days, which leaves a remainder of 4 when divided by 7.

Adding 4 days to Thursday gives Monday.

Explanation

The general pattern followed by the other triads is x : x² : x² - x, where the second number is the square of the first number, and the third number is the difference between the second number and the first number.

Applying this pattern to the first number 7: Second number = 7² = 49 Third number = 7² - 7 = 42

Since the given triad has 40 as the third number instead of 42, it does not follow the pattern and is the odd one out.

Explanation

By interchanging the operator pairs where ÷ and + are interchanged, and - and × are interchanged, the given equation 14 ÷ 6 - 4 × 15 + 5 is modified by replacing each operator with its counterpart.

The modified expression is: 14 + 6 × 4 - 15 ÷ 5

Applying the BODMAS rule:

First, perform the division operation: 15 ÷ 5 = 3

The expression becomes: 14 + 6 × 4 - 3

Next, perform the multiplication operation: 6 × 4 = 24

The expression becomes: 14 + 24 - 3

Next, perform the addition operation: 14 + 24 = 38

Finally, perform the subtraction operation: 38 - 3 = 35

Explanation

The letter-clusters follow a specific three-part pattern:

First letter: The positional value increases by 7. Second letter: The vowel is replaced by the next consecutive vowel in the cyclic sequence of vowels (A, E, I, O, U). Third letter: The positional value decreases by 4.

Applying this pattern to the given pairs: In NEZ : UIV N (14) + 7 = U (21) E is followed by the next vowel I Z (26) - 4 = V (22)

In BIL : IOH B (2) + 7 = I (9) I is followed by the next vowel O L (12) - 4 = H (8)

Applying this same pattern to the pair IUN : PAJ: I (9) + 7 = P (16) U is followed by the next cyclic vowel A N (14) - 4 = J (10)

Explanation

The coding scheme follows an alternating addition pattern of +4 and +2 to the positional values of the letters in the English alphabet.

For KARAN: K + 4 = O A + 2 = C R + 4 = V A + 2 = C N + 4 = R

Similarly, for STAPLE: S + 4 = W T + 2 = V A + 4 = E P + 2 = R L + 4 = P E + 2 = G

Applying this same logic to JOYFUL: J + 4 = N O + 2 = Q Y + 4 = C F + 2 = H U + 4 = Y L + 2 = N

This yields the code NQCHYN.

Explanation

The given series is a geometric progression where each term is multiplied by 4 to obtain the subsequent term:

18 × 4 = 72 72 × 4 = 288 288 × 4 = 1152 1152 × 4 = 4608

This pattern of multiplying by 4 consistently satisfies all terms of the series.

Explanation

The pattern of the relation is a constant shift of -2 positions backward in the alphabetical order for each letter.

For DJM to BHK: D - 2 = B J - 2 = H M - 2 = K

For JNP to HLN: J - 2 = H N - 2 = L P - 2 = N

Applying this same logic to HFD: H - 2 = F F - 2 = D D - 2 = B

Explanation

The number triads follow the pattern where the second number is obtained by multiplying the first number by 7, and the third number is obtained by multiplying the second number by 7. This represents the relation x : 7x : 49x.

In the triad 8:56:3100: 8 × 7 = 56 56 × 7 = 392

Since the third number is 3100 instead of 392, this triad does not follow the established pattern.

Explanation

To find the next term in the series, we analyze the pattern for each corresponding letter position of the given terms.

For the first letter of each term, the position in the English alphabet increases by 2: M (13) + 2 = O (15) O (15) + 2 = Q (17) Q (17) + 2 = S (19) S (19) + 2 = U (21)

For the second letter of each term, the position in the English alphabet increases by 3, wrapping around after Z: V (22) + 3 = Y (25) Y (25) + 3 = B (2) B (2) + 3 = E (5) E (5) + 3 = H (8)

For the third letter of each term, the position in the English alphabet increases by 4: J (10) + 4 = N (14) N (14) + 4 = R (18) R (18) + 4 = V (22) V (22) + 4 = Z (26)

Combining these letters yields UHZ.

Explanation

The given series follows a pattern where the difference between consecutive terms increases by 2 in each step.

The differences between the consecutive terms are: 87 - 66 = 21 110 - 87 = 23

Following this progression of adding consecutive odd numbers, the next difference must be 25.

Adding 25 to the third term: 110 + 25 = 135

We can verify this with the subsequent terms in the series: 135 + 27 = 162 162 + 29 = 191

The differences form the sequence 21, 23, 25, 27, 29, which confirms that 135 is the correct missing number.

Explanation

In the expression S + Q ÷ L × H - R:

H - R means H is the mother of R.

L × H means L is the husband of H, which makes L the father of R.

Q ÷ L means Q is the father of L.

Since Q is the father of L and L is the father of R, Q is the father's father of R.

Explanation

The pair Big - Small represents a relationship of antonyms, as the two words have opposite meanings. Similarly, Old and Young are antonyms that represent opposite ends of the age spectrum, thereby sharing the exact same relationship of contrast.

Explanation

The complete series consists of 16 letters divided into four groups of four letters each:

Group 1: _ T C U Group 2: B H _ V Group 3: B _ Q W Group 4: B J X _

By analyzing the corresponding positions of letters in each group:

First letter of each group: _ , B, B, B. This is a constant series of B. Thus, the first blank is B.

Second letter of each group: T (20), H (8), _ , J (10). The pattern decreases by 12 in each step: 20 - 12 = 8 (H) 8 - 12 = -4 ≡ 22 (V) 22 - 12 = 10 (J) Thus, the third blank is V.

Third letter of each group: C (3), _ , Q (17), X (24). The pattern increases by 7 in each step: 3 + 7 = 10 (J) 10 + 7 = 17 (Q) 17 + 7 = 24 (X) Thus, the second blank is J.

Fourth letter of each group: U (21), V (22), W (23), _ . The pattern increases by 1 in each step: 21 + 1 = 22 (V) 22 + 1 = 23 (W) 23 + 1 = 24 (X) Thus, the fourth blank is X.

Combining the letters sequentially to fill the blanks gives BJVX.

Explanation

Correct Answer: D

The common letters between BROW and WORN are R, O, and W. Correspondingly, the common digits between their codes 5064 and 4705 are 5, 0, and 4. This leaves the letter B in BROW and the digit 6 in its code 5064. Therefore, B is coded as 6.

Explanation

The given equation is: 24 - 3 ÷ 4 × 45 + 5 = ?

Interchanging '+' with '÷' and '-' with '×', the equation becomes: 24 × 3 + 4 - 45 ÷ 5 = ?

Now, applying the BODMAS rule: First, perform the division: 45 ÷ 5 = 9

Next, perform the multiplication: 24 × 3 = 72

Substitute these values back into the expression: 72 + 4 - 9

Finally, perform the addition and subtraction: 76 - 9 = 67

Explanation

Conclusion I does not follow because there is no statement that prevents hills from overlapping with forests. Conclusion II follows because some deserts are valleys, and since all valleys are hills, the portion of deserts that are valleys must also be hills.

Explanation

G is married to H, and H is the mother of I. This means H is the mother of I, and G is the father of I.

Since J is the sister of G, J is the sister of I's father. Therefore, J is the father's sister of I.

Explanation

The letter-cluster KML follows a pattern where the second letter is obtained by adding 2 to the alphabetical position of the first letter, and the third letter is obtained by subtracting 1 from the second letter. This corresponds to the positions K (11) + 2 = M (13), and M (13) - 1 = L (12), establishing a (+2, -1) relationship. All other letter-clusters in the group follow a (+3, -2) relationship, making KML the odd one out.

Explanation

By interchanging '+' with '-' and '×' with '÷', the expression 300 + 242 × 11 - 15 ÷ 9 becomes:

300 - 242 ÷ 11 + 15 × 9

Applying the BODMAS rule:

First, perform the division: 242 ÷ 11 = 22

Next, perform the multiplication: 15 × 9 = 135

Now, substitute these results back into the expression: 300 - 22 + 135

Finally, perform the addition and subtraction: 300 - 22 + 135 = 278 + 135 = 413

Explanation

The relation among the numbers in the given triads is defined by multiplying the first number by the second number to obtain the third number.

First number × Second number = Third number

For the first triad: 6 × 7 = 42

For the second triad: 8 × 13 = 104

Following this same logic: 12 × 11 = 132

Explanation

The number pair 14-42 does not conform to the logic y = 3x + 3, which is followed by the other pairs in the set. For the other pairs, the second number is obtained by multiplying the first number by 3 and adding 3, such as 17 × 3 + 3 = 54, 19 × 3 + 3 = 60, and 15 × 3 + 3 = 48. In the case of 14-42, the relation is simply 14 × 3 = 42, making it the odd one out.

Explanation

The alphabetical positions of the letters in NXR are N = 14, X = 24, and R = 18. The difference between the first and second letters is +10, and the difference between the second and third letters is -6. This does not follow the standard +7 and -3 positional difference pattern shared by the other letter groups.

Explanation

From 19 June 2001 to 19 June 2009, there are 8 years, including 2 leap years (2004 and 2008), which gives 10 odd days (or 3 odd days). Thus, 19 June 2009 is a Friday. Adding the 63 days (0 odd days) from 19 June 2009 to 21 August 2009 results in a Friday.

Explanation

By comparing the letters in MINER and ANIME, we find that the letters M, I, N, and E are common to both words, leaving R as the unique letter in MINER. Similarly, comparing the digit codes 56342 and 63457 shows that 5, 6, 3, and 4 are common, leaving 2 as the unique digit representing R.

Explanation

The month has 29 days, so the last day of the month is the 29th. The second last day of the month is therefore the 28th.

The 13th day of the month is a Thursday. To find the day of the week for the 28th, we calculate the difference in days between the 28th and the 13th: 28 - 13 = 15 days

We then find the number of odd days by dividing this difference by 7: 15 ÷ 7 = 2 weeks with a remainder of 1 day

Adding 1 day to Thursday gives Friday. Therefore, the second last day of the month is a Friday.

Explanation

Applying the specified operator interchanges to the expression: is interchanged with ÷ ÷ is interchanged with -

• is interchanged with × × is interchanged with +

The original expression is: 105 - 15 ÷ 13 + 3 × 27

Substituting the interchanged operators yields: 105 ÷ 15 - 13 × 3 + 27

Evaluating the expression using the BODMAS rule: First, perform the division: 105 ÷ 15 = 7

Next, perform the multiplication: 13 × 3 = 39

Substitute these values back into the expression: 7 - 39 + 27

Now, perform the addition and subtraction: 7 + 27 - 39 = 34 - 39 = -5

Explanation

The relationship between the numbers in each pair follows a pattern where the second number is obtained by multiplying the first number by 3.

First pair: 146 × 3 = 438 Second pair: 316 × 3 = 948

Applying the same mathematical relation to the third pair: 556 × 3 = 1668