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

Explanation

The relationship between the first number (x) and the second number (y) in the given pairs follows the mathematical formula: y = 3x + 3

Applying this formula to the given pairs: 21 × 3 + 3 = 63 + 3 = 66 32 × 3 + 3 = 96 + 3 = 99

Using the same logic for the pair (45, 138): 45 × 3 + 3 = 135 + 3 = 138

Explanation

The relationship between the terms is established by shifting each letter of the first term backward by three positions in the English alphabetical order to obtain the corresponding letter of the second term.

Applying this pattern to DHJ and AEG: D (4th letter) - 3 = A (1st letter) H (8th letter) - 3 = E (5th letter) J (10th letter) - 3 = G (7th letter)

Applying the same logic to EKQ: E (5th letter) - 3 = B (2nd letter) K (11th letter) - 3 = H (8th letter) Q (17th letter) - 3 = N (14th letter)

This gives BHN as the related term.

Explanation

The series decreases by successive powers of 2. Calculating the differences between consecutive terms:

383 - 381 = 2 = 2¹ 381 - 377 = 4 = 2² 377 - 369 = 8 = 2³ 369 - 353 = 16 = 2⁴

Following this pattern, the next difference must be 2⁵ = 32. Subtracting 32 from the last term gives:

353 - 32 = 321

Explanation

The relation between the numbers in each set follows the pattern where the product of the first two numbers added to 5 results in the third number.

First number × Second number + 5 = Third number

Applying this logic to the given sets: For (12, 11, 137): 12 × 11 + 5 = 132 + 5 = 137 For (17, 21, 362): 17 × 21 + 5 = 357 + 5 = 362

Applying the same logic to the set (21, 25, 530): 21 × 25 + 5 = 525 + 5 = 530

Explanation

To determine how G is related to K from the expression G ÷ H × I - J + K, we decode the relationships step-by-step:

J + K means J is the father of K.

I - J means I is the wife of J. Since J is the father of K, I must be the mother of K.

H × I means H is the brother of I.

G ÷ H means G is the mother of H. Since H and I are siblings, G is also the mother of I.

Since I is the mother of K, and G is the mother of I, G is the mother's mother (maternal grandmother) of K.

Explanation

The series consists of three distinct patterns for the first letter, the second letter, and the number of each term.

For the first letter, the alphabetical positions are: B (2), ?, H (8), K (11), N (14) The position increases by 3 at each step. 2 + 3 = 5, which corresponds to E. 5 + 3 = 8, which corresponds to H. Thus, the first letter is E.

For the second letter, the alphabetical positions are: O (15), ?, U (21), X (24), A (27 or 1) The position increases by 3 at each step. 15 + 3 = 18, which corresponds to R. 18 + 3 = 21, which corresponds to U. Thus, the second letter is R.

For the number part: 88, ?, 80, 76, 72 The numbers decrease by 4 at each step. 88 - 4 = 84 84 - 4 = 80 Thus, the number is 84.

Combining these components yields the complete term ER 84.

Explanation

Substituting the operations into the equation: 114 D 6 C 5 A 87 B 33

where: A stands for + B stands for - C stands for × D stands for ÷

We get: 114 ÷ 6 × 5 + 87 - 33

Applying the BODMAS rule:

First, perform the division: 114 ÷ 6 = 19

Next, perform the multiplication: 19 × 5 = 95

Finally, perform the addition and subtraction: 95 + 87 - 33 = 149

Explanation

To determine which letters remain unchanged, we write the original word and then arrange its letters in alphabetical order.

Original word: A M P L I F Y Sorted order: A F I L M P Y

Comparing each position: The letter A is at the first position in both. The letter L is at the fourth position in both. The letter Y is at the seventh position in both.

This gives a total of three letters whose positions remain unchanged.

Explanation

Interchanging the mathematical operators - and × in the equation 75 ÷ 15 × 8 + 14 - 5 results in: 75 ÷ 15 - 8 + 14 × 5

Applying the BODMAS rule to evaluate this expression, we first perform the division: 75 ÷ 15 = 5

Substituting this back gives: 5 - 8 + 14 × 5

Next, we perform the multiplication: 14 × 5 = 70

The expression now becomes: 5 - 8 + 70

Finally, performing the addition and subtraction from left to right yields: -3 + 70 = 67

This matches the right-hand side of the equation.

Explanation

From the given statements, we can establish the relationship between the sets of elephants, tigers, and horses. Since all elephants are tigers and all tigers are horses, it logically follows that all elephants are horses. Because all elephants are contained within the set of horses, there is a positive intersection between the two sets, which means some horses are elephants. Therefore, conclusion I is logically valid and follows.

Explanation

The common relationship between the numbers in the group is that the difference between the first and second numbers multiplied by 3 equals the third number. This can be expressed by the formula: (First number - Second number) × 3 = Third number

For the numbers 46, 41, and 12, this relation does not hold true: (46 - 41) × 3 = 5 × 3 = 15

Since the result is 15 and the third number is 12, this set of numbers does not follow the pattern.

Explanation

The series is formed by three independent patterns for the first letter, second letter, and number in each term.

For the first letter, the positional values increase by 2: E (5) + 2 = G (7) G (7) + 2 = I (9) I (9) + 2 = K (11) K (11) + 2 = M (13)

For the second letter, the positional values decrease by 1: Y (25) - 1 = X (24) X (24) - 1 = W (23) W (23) - 1 = V (22) V (22) - 1 = U (21)

For the numbers, the difference between consecutive terms alternates between +4 and +2: 14 + 4 = 18 18 + 2 = 20 20 + 4 = 24 24 + 2 = 26

Combining these patterns, the missing term is GX 18.

Explanation

The coding pattern divides the six-letter word into two halves. The first three letters are shifted forward by 2 positions (+2) in alphabetical order, while the last three letters are shifted backward by 2 positions (-2).

Applying this rule to the word PERSON: P + 2 = R E + 2 = G R + 2 = T S - 2 = Q O - 2 = M N - 2 = L

This results in the coded form RGTQML.

Explanation

The series follows a specific pattern for each corresponding letter in the clusters.

For the first letter, the sequence decreases by 2 steps: G to E, E to C, C to A, and A to Y.

For the second letter, the sequence decreases by 2 steps: B to Z, Z to X, X to V, and V to T.

For the third letter, the sequence increases by 1 step: W to X, X to Y, Y to Z, and Z to A.

Applying these rules to the last cluster AVZ yields the next cluster YTA.

Explanation

To find the code for the word 'back', we compare the two given coded statements:

First statement: 'will come back' is coded as 'mp rq pl' Second statement: 'back to school' is coded as 'in st mp'

The only word common to both English phrases is 'back'. Correspondingly, the only code word common to both coded phrases is 'mp'. Therefore, 'back' is represented by the code 'mp'.

Explanation

To find the day of the week on 10 October 1993 starting from 17 April 1992, we calculate the total number of days between the two dates.

Remaining days in 1992: April: 13 days May: 31 days June: 30 days July: 31 days August: 31 days September: 30 days October: 31 days November: 30 days December: 31 days

Days in 1993: January: 31 days February: 28 days (1993 is a non-leap year) March: 31 days April: 30 days May: 31 days June: 30 days July: 31 days August: 31 days September: 30 days October: 10 days

Total days = 13 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31 + 31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 10 = 541 days.

Dividing the total days by 7 to find the remainder (odd days): 541 mod 7 = 2 odd days.

Adding 2 odd days to the reference day: Friday + 2 days = Sunday.

Explanation

The pattern in the series is based on a recursive relation where each term is multiplied by 2 and then decreased by 2 to get the next term.

Tₙ = 2 × Tₙ₋₁ - 2

Applying this rule to the series: 13 × 2 - 2 = 24 24 × 2 - 2 = 46 46 × 2 - 2 = 90 90 × 2 - 2 = 178

Following the same pattern, the next term is: 178 × 2 - 2 = 354

Alternatively, the difference between consecutive terms doubles at each step. The differences are: 24 - 13 = 11 46 - 24 = 22 (which is 11 × 2) 90 - 46 = 44 (which is 22 × 2) 178 - 90 = 88 (which is 44 × 2)

The next difference is 88 × 2 = 176. Adding this to the last term gives: 178 + 176 = 354

Explanation

The letter group MZK consists of letters with alphabetical positions of M = 13, Z = 26, and K = 11. The difference between the first and second letters is +13, and the difference between the second and third letters is -15. This combination of differences deviates from the consistent pattern of +2 and -4 found in the rest of the groups, which makes MZK the odd one out.

Explanation

By separating the series into five groups of four letters each, we have: Group 1: G _ M A Group 2: _ V O Y Group 3: K T Q _ Group 4: M R _ U Group 5: O _ U S

Analyzing the pattern for each letter position across the five groups reveals consistent arithmetic progressions in alphabetical positions:

For the first letter of each group, the alphabetical positions are G (7), _, K (11), M (13), O (15). The pattern increases by 2. This gives the second blank as I (9).

For the second letter of each group, the alphabetical positions are _, V (22), T (20), R (18), _. The pattern decreases by 2. This gives the first blank as X (24) and the fifth blank as P (16).

For the third letter of each group, the alphabetical positions are M (13), O (15), Q (17), _, U (21). The pattern increases by 2. This gives the fourth blank as S (19).

For the fourth letter of each group, the alphabetical positions are A (27), Y (25), _, U (21), S (19). The pattern decreases by 2. This gives the third blank as W (23).

Combining the filled letters in their order of occurrence from left to right yields the sequence XIWSP.

Explanation

L is the sister of G, and G is the son of M, which means both L and G are the children of M. Since M is married to D and D is the sister of E, D is female, making her the mother of L and G. Since D is the sister of E, L is the daughter of E's sister. Therefore, L is the sister's daughter of E.

Explanation

The general pattern followed by the other pairs is multiplying the first number by 3 and adding 3 to obtain the second number. In the pair 29 - 88, this relationship does not hold because 29 × 3 + 1 = 88, meaning 1 is added instead of 3.

Explanation

In the triplet 9-44-218, the numbers do not follow the common mathematical rule where the second number is obtained by multiplying the first number by 5 and adding 1, and the third number is obtained by multiplying the second number by 5 and adding 1. Performing these operations on 9 yields 46 (since 9 × 5 + 1 = 46) and 231 (since 46 × 5 + 1 = 231), which does not match the given values of 44 and 218, making this triplet the odd one out.

Explanation

From the first statement, there is a partial overlap between the set of books and the set of horses, meaning some books are horses. The second statement establishes that the entire set of horses is contained within the set of animals. Since the portion of books that are horses is fully contained within the set of horses, that same portion must also be contained within the set of animals. This directly confirms that some books are animals, which conversely means some animals are books. Therefore, conclusion II logically follows.

For conclusion I, the third statement states that some animals are oceans. Since the overlap between animals and oceans does not necessarily intersect with the subset of horses within the set of animals, no definite connection can be established between horses and oceans. Thus, conclusion I does not logically follow.

Explanation

Correct Answer: D

The logic followed in the given pairs is based on the squares of consecutive integers minus 1. Each pair (x, y) can be expressed as x = n² - 1 and y = (n + 1)² - 1.

For the first pair, 35 and 48: 35 = 6² - 1 48 = 7² - 1

For the second pair, 80 and 99: 80 = 9² - 1 99 = 10² - 1

For the third pair, starting with 143: 143 = 12² - 1

Following the same logic, the related number is: (12 + 1)² - 1 = 13² - 1 = 169 - 1 = 168

Explanation

By comparing the letters in the words WANTED and WARNED, the letters W, A, N, E, and D are common to both words. The letter T is unique to WANTED, and the letter R is unique to WARNED.

Similarly, comparing the digit codes 241573 and 415278, the digits 1, 2, 4, 5, and 7 are common to both. The digit 3 is unique to the code for WANTED, which means T corresponds to 3. The digit 8 is unique to the code for WARNED, which means R corresponds to 8.

Explanation

The given series follows a specific pattern of decreasing alphabetical positions of the English alphabet (where Z = 26, Y = 25, ..., A = 1). By analyzing the differences between consecutive terms, a repeating pattern of subtraction is revealed: -1, -2, -1, -1, -1, -2, -1, -1, -1, -2, and so on. In this pattern, every fourth subtraction is -2, while all other subtractions are -1.

Applying this systematic rule starting from Z (26):

Z (26) - 1 = Y (25) Y (25) - 2 = W (23) (First blank) W (23) - 1 = V (22) V (22) - 1 = U (21) U (21) - 1 = T (20) (Second blank) T (20) - 2 = R (18) R (18) - 1 = Q (17) Q (17) - 1 = P (16) (Third blank) P (16) - 1 = O (15) O (15) - 2 = M (13) M (13) - 1 = L (12) L (12) - 1 = K (11) K (11) - 1 = J (10) J (10) - 2 = H (8) (Fourth blank) H (8) - 1 = G (7) G (7) - 1 = F (6) F (6) - 1 = E (5) (Fifth blank) E (5) - 2 = C (3) C (3) - 1 = B (2)

Thus, the letters that fill the blanks sequentially are W, T, P, H, and E.

Explanation

The relationship between the letter groups is based on a specific rearrangement of their letter positions. By numbering the positions of the four letters in each group from left to right as 1, 2, 3, and 4, the pattern transforms 1-2-3-4 into 3-4-1-2.

In the first pair, DNST (1-2-3-4) becomes STDN (3-4-1-2). In the second pair, RXMK (1-2-3-4) becomes MKRX (3-4-1-2).

Applying this same 3-4-1-2 position mapping to WBGH, where W is 1, B is 2, G is 3, and H is 4, results in GHWB.

Explanation

In the majority of the pairs, the second number is the cube of the first number, following the pattern x → x³. For instance, 8³ = 512, 2³ = 8, and 9³ = 729. The pair 3 - 9 deviates from this logic because the second number is the square of the first number (3² = 9) rather than its cube, which is 27.

Explanation

The given series consists of consecutive prime numbers starting from 71. The prime numbers in this sequence are 71, 73, 79, 83, 89, and 97. The prime number that immediately follows 79 is 83.

Explanation

The pattern followed in the letter-clusters is: First letter + 6 Second letter - 4 Third letter + 4

Applying this to the given pairs: For OTG to UPK: O (15) + 6 = U (21) T (20) - 4 = P (16) G (7) + 4 = K (11)

For YND to EJH: Y (25) + 6 = E (5) N (14) - 4 = J (10) D (4) + 4 = H (8)

Applying the same pattern to GHS: G (7) + 6 = M (13) H (8) - 4 = D (4) S (19) + 4 = W (23)

This matches GHS : MDW.

Explanation

To find the code for the word do, we compare the two given statements and their corresponding codes.

In the statement lets do it coded as nq pl st and the statement do your work coded as st mr jn, the only common word is do.

Comparing the codes for both statements, the only common code is st. Therefore, the word do is coded as st.

Explanation

In the given expression T × Y + E + S - R, we decode the relationships step-by-step from left to right:

T × Y means T is the sister of Y.

Y + E means Y is the father of E.

E + S means E is the daughter of S. Since Y is already established as the father of E, S must be the mother of E. This means Y and S are husband and wife.

S - R means S is the mother of R. Since S is married to Y, Y is the father of R.

T is the sister of Y, and Y is the father of R. Therefore, T is the father's sister of R.

Explanation

Correct Answer: B

Dividing the series into four groups of four letters each gives: Group 1: P _ R S Group 2: P G _ S Group 3: P _ L S Group 4: P M _ S

Each group starts with P and ends with S, following the template P _ _ S.

Placing the letters from option B (B, W, V, Q) into the blanks: Group 1: P B R S Group 2: P G W S Group 3: P V L S Group 4: P M Q S

Let us analyze the letters in the third position of each group: R (18) → (+5) → W (23) → (+15) → L (12) → (+5) → Q (17) The pattern of differences is +5, +15, +5.

Analyzing the letters in the second position of each group: B (2) → (+5) → G (7) → (+15) → V (22) → (-9) → M (13)

This completes the logical sequence.

Explanation

The letters of the word WORKING are G, I, K, N, O, R, and W.

Arranging these letters in alphabetical order gives the sequence G, I, K, N, O, R, W.

In this new sequence: The letter third from the left is K. The letter fourth from the right is N.

The letters in the English alphabetical series that lie between K and N are L and M. This gives a total of two letters.

Explanation

The relationship among the numbers in each triad follow the pattern where the first number divided by 4 equals the second number, and the second number multiplied by 2 equals the third number.

First Triad: 1016 ÷ 4 = 254 254 × 2 = 508

Second Triad: 2200 ÷ 4 = 550 550 × 2 = 1100

Applying this same logic to the correct option: 5400 ÷ 4 = 1350 1350 × 2 = 2700

Explanation

Applying the interchanges given in option C, where the operators ÷ and + are interchanged, and the numbers 5 and 7 are interchanged, the given equation is modified as follows:

Original Equation: 84 + 5 × 4 ÷ 32 - 7 = 75

After interchanging + with ÷, and 5 with 7: 84 ÷ 7 × 4 + 32 - 5 = 75

Applying BODMAS rules to solve the Left-Hand Side (LHS):

First, perform the division: 84 ÷ 7 = 12

Next, perform the multiplication: 12 × 4 = 48

Now, perform the addition and subtraction: 48 + 32 - 5 = 80 - 5 = 75

Since LHS = RHS = 75, the equation is balanced.

Explanation

From the given expression B + C × D - E ÷ F, we can decode the relationships starting from F:

E ÷ F means E is the father of F.

D - E means D is the brother of E.

Since E is the father of F and D is the brother of E, D is the father's brother of F.

Explanation

The series is formed by adding consecutive prime numbers to each term.

The difference between the first two terms is: 93 - 74 = 19

The difference between the fourth and fifth terms is: 176 - 145 = 31

The difference between the fifth and sixth terms is: 213 - 176 = 37

The consecutive prime numbers in this range are 19, 23, 29, 31, and 37.

Following this pattern, the next difference after 19 must be the prime number 23: 93 + 23 = 116

To verify, adding the next prime number, 29, to this result yields the fourth term: 116 + 29 = 145

Explanation

Each letter of the first term is shifted forward by two positions (+2) in the English alphabetical order to obtain the corresponding letter of the second term.

Analyzing the relationship between FCMJ and HEOL: F + 2 = H C + 2 = E M + 2 = O J + 2 = L

Analyzing the relationship between RQBL and TSDN: R + 2 = T Q + 2 = S B + 2 = D L + 2 = N

Applying this same +2 shift pattern to MUAG: M + 2 = O U + 2 = W A + 2 = C G + 2 = I

Thus, MUAG corresponds to OWCI.

Explanation

The expression is decoded step-by-step as follows:

P - Q means P is the wife of Q, which implies Q is male.

Q × R means Q is the brother of R.

R + S means R is the son of S.

Since Q is the brother of R, they are siblings. Since R is the son of S, Q must also be the son of S.

Explanation

The relationship among the three numbers (A - B - C) in each triad follows the specific pattern where the sum of the first and third numbers is multiplied by 5 to obtain the middle number.

Formula: B = (A + C) × 5

Applying this formula to the first triad (5 - 70 - 9): (5 + 9) × 5 = 14 × 5 = 70

Applying this formula to the second triad (8 - 95 - 11): (8 + 11) × 5 = 19 × 5 = 95

Applying this formula to the triad (6 - 135 - 21): (6 + 21) × 5 = 27 × 5 = 135

Explanation

Arranging the letters of the word NERVOUS in alphabetical order gives the sequence: E, N, O, R, S, U, V.

In this new sequence, the letter that is fourth from the left is R, and the letter that is second from the right is U.

In the standard English alphabetical series, the letters between R and U are S and T. Thus, there are exactly two letters between them.

Explanation

The mathematical operation relating the numbers in the given pairs is that the second number is obtained by squaring the first number and then subtracting 4. This can be expressed by the formula:

Second number = (First number)² - 4

Applying this to the given pairs: 9² - 4 = 81 - 4 = 77 16² - 4 = 256 - 4 = 252

Using this same logic for the pair in option B: 11² - 4 = 121 - 4 = 117

Explanation

The series follows a pattern where the n-th term is multiplied by n and then added to n to obtain the next term:

11 × 1 + 1 = 12 12 × 2 + 2 = 26 26 × 3 + 3 = 81 81 × 4 + 4 = 328 328 × 5 + 5 = 1645

Following this pattern, the next term is calculated as: 1645 × 6 + 6 = 9870 + 6 = 9876

Explanation

The given letter series is utt_tt_ttu.

By placing the letters from the correct option sequentially into the blanks, the completed series becomes: tuttuttuttut

This sequence is formed by the continuous repetition of the three-letter pattern tut: tut tut tut tut

Thus, the letters t, u, u, t correctly complete the series.

Explanation

The common letters in both words NATURE and LEARNT are N, A, T, R, and E. The remaining unique letter in LEARNT is L.

The common digits in their respective codes, 279346 and 794621, are 2, 7, 9, 4, and 6. The remaining unique digit in the code for LEARNT is 1.

This directly matches the letter L with the digit 1.

Explanation

The series follows a pattern where each term is obtained by shifting the letters of the previous term backward by three positions in the English alphabetical order.

Analyzing the position of each letter in the terms: For the first letters: X (24) → U (21) → R (18) → O (15). Subtracting 3 from 15 gives 12, which corresponds to L. For the second letters: Z (26) → W (23) → T (20) → Q (17). Subtracting 3 from 17 gives 14, which corresponds to N. For the third letters: Y (25) → V (22) → S (19) → P (16). Subtracting 3 from 16 gives 13, which corresponds to M.

Combining these letters gives LNM.

Explanation

The series consists of three patterns for the first letter, second letter, and the number.

First letters follow the pattern of adding 2 to the alphabetical position of each preceding letter: C (3), E (5), G (7), I (9), K (11). This gives G as the first letter.

Second letters follow a similar pattern of adding 2 to the alphabetical position: O (15), Q (17), S (19). This gives S as the second letter.

The numbers decrease by 2 at each step: 29, 27, 25, 23, 21. This gives 25 as the number.

Combining these elements, the missing term is GS 25.

Explanation

The given expression is B + R × M - P.

Decoding the relations step-by-step: B + R means B is the daughter of R. R × M means R is the son of M. M - P means M is the father of P.

Analyzing these relationships, B is the daughter of R, and R is the son of M. This means B is the daughter of M's son. Thus, B is the son's daughter of M.

Explanation

The logic shared by the given pairs of numbers (x : y) is y = 3x + 2.

For the first pair, 11 : 35: 3 × 11 + 2 = 35

For the second pair, 13 : 41: 3 × 13 + 2 = 41

Applying this same logic to the pair 32 : 95 in option C: 3 × 32 + 2 = 98

Since the result is 98 and not 95, this pair does not share the same relationship.