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

Explanation

The relationship between the first and second number in three of the pairs follows the formula: second number = (first number + 3) × 5.

Applying this formula to the matching pairs: For 29:160, (29 + 3) × 5 = 32 × 5 = 160. For 27:150, (27 + 3) × 5 = 30 × 5 = 150. For 21:120, (21 + 3) × 5 = 24 × 5 = 120.

Applying this formula to 31:138, (31 + 3) × 5 = 34 × 5 = 170, which is not equal to 138.

Thus, the pair 31:138 does not follow the pattern.

Explanation

Correct Answer: D

The term dietitian is not mentioned in any of the given statements. In syllogisms, no logical relationship or conclusion can be established about a term that is completely absent from the premises. Because dietitians does not appear in the statements, neither Conclusion I nor Conclusion II can follow from the given premises.

Explanation

The coding pattern involves shifting each letter forward by 8 positions in the alphabetical order (mod 26).

Applying this pattern to the word BLOWZY: B + 8 = J L + 8 = T O + 8 = W W + 8 = E Z + 8 = H Y + 8 = G

Applying the same +8 shift to each letter of SQUAWK: S (19) + 8 = 27 → A (1) Q (17) + 8 = 25 → Y (25) U (21) + 8 = 29 → C (3) A (1) + 8 = 9 → I (9) W (23) + 8 = 31 → E (5) K (11) + 8 = 19 → S (19)

This yields the code AYCIES.

Explanation

The given series follows a pattern where the differences between consecutive terms are consecutive perfect squares starting from 5².

First difference: 308 - 283 = 25 = 5² Second difference: 344 - 308 = 36 = 6²

Following this pattern, the next difference must be 7² = 49.

Adding 49 to the third term gives: 344 + 49 = 393

To verify, the next difference must be 8² = 64. Adding 64 to 393 gives: 393 + 64 = 457

This perfectly matches the final term of the series.

Explanation

To find the day of the week on 30 May 2010 starting from 29 November 2009, we calculate the total number of days between these two dates.

Remaining days in November 2009 = 1 day (30 - 29) December 2009 = 31 days January 2010 = 31 days February 2010 = 28 days (since 2010 is a non-leap year) March 2010 = 31 days April 2010 = 30 days May 2010 = 30 days (up to 30 May)

Total days = 1 + 31 + 31 + 28 + 31 + 30 + 30 = 182 days

To find the number of odd days, we divide the total days by 7: 182 ÷ 7 = 26 weeks and 0 remaining days.

Since there are 0 odd days, the day of the week on 30 May 2010 will be identical to the day on 29 November 2009, which is Sunday.

Explanation

Correct Answer: C

The original word is DEFORM.

When the letters of the word are arranged in alphabetical order, we get: Original: D E F O R M Arranged: D E F M O R

Comparing the original and the rearranged positions: The first letter D remains in the 1st position. The second letter E remains in the 2nd position. The third letter F remains in the 3rd position. The fourth, fifth, and sixth letters change their positions.

Therefore, the positions of exactly three letters (D, E, and F) remain unchanged.

Explanation

The given expression is P × Q - R ÷ S + T.

Decoding the relations from left to right: P × Q indicates that P is the mother of Q. Q - R indicates that Q is the brother of R. This means Q and R are siblings, which makes P the mother of R as well. R ÷ S indicates that R is the father of S.

Since R is the father of S and P is the mother of R, P is the mother of S's father. Therefore, P is the father's mother of S.

Explanation

The given letter series consists of 16 letters, which can be divided into four groups of four letters each:

Group 1: _ o p _ Group 2: n o _ n Group 3: _ p n m Group 4: o p _ _

By substituting the letters from option C (m, n, p, m, o, n) sequentially into the blanks, we get:

1st blank = m 2nd blank = n 3rd blank = p 4th blank = m 5th blank = o 6th blank = n

This completes the series as: m o p n | n o p n | m p n m | o p o n

Explanation

The expression L × K + D - S ÷ T can be decoded step-by-step to find the relation between S and L:

L × K means L is the son of K.

K + D means K is the mother of D. This implies that L and D are siblings sharing K as their mother.

D - S means D is the wife of S. Since D is the wife of S, D is female, which makes her the sister of L, and S is her husband.

S ÷ T means S is the brother of T, which confirms S is male.

Therefore, S is the husband of L's sister D, making S the sister's husband of L.

Explanation

The relationship between the letter-clusters is established by applying a specific mathematical operation to the alphabetical positions of the letters in each cluster.

Looking at the first pair, YQF:HOI: The first letter Y (25) increases by 9 positions to become H (8), because 25 + 9 = 34, and 34 - 26 = 8. The second letter Q (17) decreases by 2 positions to become O (15), since 17 - 2 = 15. The third letter F (6) increases by 3 positions to become I (9), since 6 + 3 = 9.

The same pattern of +9, -2, and +3 is applied to the second pair, FSO:OQR: F (6) + 9 = O (15) S (19) - 2 = Q (17) O (15) + 3 = R (18)

Applying this identical pattern to the letter-cluster QML: Q (17) + 9 = Z (26) M (13) - 2 = K (11) L (12) + 3 = O (15)

This yields the cluster ZKO.

Explanation

The coding pattern follows two distinct rules for the letters and the numbers.

For the letters, the first letter is shifted forward by 7 positions, while the second letter is shifted backward by 7 positions in alphabetical order. Applying this to GS: First letter: G + 7 positions = N Second letter: S - 7 positions = L

For the numbers, they are the squares of consecutive integers. The number in the code is the square of the integer that is one greater than the integer squared in the original term: 324 = 18², which increases to 19² = 361 529 = 23², which increases to 24² = 576 625 = 25², which increases to 26² = 676

Combining these patterns gives the code NL676.

Explanation

Replacing the letter symbols with their respective mathematical operators in the expression 124 D 4 A 13 B 12 C 28:

124 ÷ 4 + 13 × 12 - 28

Applying the BODMAS rule:

First, perform the division: 124 ÷ 4 = 31

Next, perform the multiplication: 13 × 12 = 156

Substitute these values back into the expression: 31 + 156 - 28

Perform the addition: 31 + 156 = 187

Finally, perform the subtraction: 187 - 28 = 159

Explanation

Applying the specified operator interchanges: Replace × with ÷ Replace - with + Replace ÷ with × Replace + with -

The original equation: 84 × 7 - 21 ÷ 4 + 29

After interchanging the operators, the equation becomes: 84 ÷ 7 + 21 × 4 - 29

Using the BODMAS rule:

First, perform the division: 84 ÷ 7 = 12

Next, perform the multiplication: 21 × 4 = 84

Now, perform the addition and subtraction in sequence: 12 + 84 - 29 = 96 - 29 = 67

Explanation

In the number pair 94 - 11, the first number is not equal to nine times the second number, since 11 × 9 = 99. In all other pairs, the first number is exactly nine times the second number.

Explanation

The relationship between the first number (x) and the second number (y) in each given pair is defined by the formula:

y = 8x - 20

Applying this formula to the first pair: 8 × 40 - 20 = 320 - 20 = 300

Applying this formula to the second pair: 8 × 27 - 20 = 216 - 20 = 196

Applying the same formula to the numbers in the correct option: 8 × 200 - 20 = 1600 - 20 = 1580

Explanation

The given series is 48, 68, ?, 138, 188, 208.

By analyzing the differences between consecutive terms, we find: 68 - 48 = 20 188 - 138 = 50 208 - 188 = 20

The sequence of differences follows a symmetric repeating pattern: 20, 20, 50, 50, 20.

Applying the first difference of 20 to the second term: 68 + 20 = 88

To verify, we apply the next difference of 50 to this term: 88 + 50 = 138

This perfectly matches the next term in the series. Therefore, the missing term is 88.

Explanation

X is the mother of C and is married to W, which makes W the father of C. C is married to D. Since D is the sister of O, D is female, which means C is the husband and therefore male. Consequently, C is the son of W. Since P is the son of C, P is the son's son of W.

Explanation

The coding pattern involves shifting each letter in the word forward by two positions in the English alphabetical order.

For the word FLASH: F + 2 = H L + 2 = N A + 2 = C S + 2 = U H + 2 = J

For the word ENDOW: E + 2 = G N + 2 = P D + 2 = F O + 2 = Q W + 2 = Y

Applying the same pattern to the word DEBIT: D + 2 = F E + 2 = G B + 2 = D I + 2 = K T + 2 = V

This yields the code FGDKV.

Explanation

The first statement states that all movies are bottles. In syllogisms, a universal affirmative statement of the form All A are B logically implies the particular affirmative statement Some A are B. Therefore, the first conclusion that some movies are bottles is logically valid.

The third statement states that all steel are cupboards. A universal affirmative statement of the form All A are B can be converted to the particular affirmative statement Some B are A. Thus, if all steel are cupboards, it is directly implied that some cupboards are steel, making the second conclusion logically valid.

Explanation

The relation expression is A # K + J @ T.

From A # K, A is the mother of K.

From K + J, K is the father of J. Since A is K's mother, K is the son of A.

From J @ T, J is the brother of T, which means J is male.

Since K is the father of J, J is the son of K. Given that K is the son of A, J is the son's son of A.

Explanation

The given sequence follows the pattern of adding consecutive odd numbers to each term. The differences between successive terms are:

6 - 3 = 3 11 - 6 = 5 18 - 11 = 7 27 - 18 = 9

Following this pattern, the next difference must be the next odd number, which is 11. Adding 11 to the last term yields:

27 + 11 = 38

Alternatively, the nth term of the series is given by the formula n² + 2, where n starts from 1. For the sixth term where n = 6, the value is 6² + 2 = 36 + 2 = 38.

Explanation

The letter cluster OPRS is the odd one out because the alphabetical positions of its letters do not follow the constant addition pattern of +2, +4, and +2 seen in the other clusters. The letters O, P, R, and S have alphabetical positions of 15, 16, 18, and 19 respectively. The differences between consecutive letters in this cluster are +1, +2, and +1, which differs from the standard +2, +4, and +2 pattern followed by all other groups.

Explanation

Tuesday plus 6 days corresponds to Monday, so 20 June of that year is a Monday.

To find the day on 11 August, we calculate the total number of days between 20 June and 11 August: Remaining days in June = 30 - 20 = 10 days Days in July = 31 days Days in August = 11 days Total days = 10 + 31 + 11 = 52 days

Dividing the total days by 7 to find the number of odd days: 52 = 7 × 7 + 3

Since there is a remainder of 3 odd days, we add 3 days to Monday, which results in Thursday.

Explanation

The relationship between the terms is based on a constant shift where each letter is moved forward by two positions in alphabetical order, and the number is increased by 2.

In the first pair, B + 2 = D, K + 2 = M, and 19 + 2 = 21, resulting in DM 21.

In the second pair, R + 2 = T, C + 2 = E, and 11 + 2 = 13, resulting in TE 13.

Applying this same pattern to MJ 17: M + 2 = O J + 2 = L 17 + 2 = 19

This gives OL 19.

Explanation

The statement Some stars are buttons indicates an intersection between stars and buttons. Since All buttons are ribbons, the entire set of buttons is contained within the set of ribbons. Consequently, the part of stars that overlaps with buttons must also overlap with ribbons, which validates the conclusion Some stars are ribbons.

For the second conclusion, the statement All buttons are ribbons means that buttons form a subset of ribbons. This immediately implies that there is a mutual intersection between the two sets, which validates the converse conclusion Some ribbons are buttons.

Explanation

The series follows a specific letter-shifting pattern for each position of the letter-cluster:

First letter: D → E → F → G (increases by +1) Second letter: P → O → N → M (decreases by -1) Third letter: M → L → K → J (decreases by -1) Fourth letter: W → X → Y → Z (increases by +1)

Applying this pattern to the last cluster FNKY: F + 1 = G N - 1 = M K - 1 = J Y + 1 = Z

This gives the letter-cluster GMJZ.

Explanation

Correct Answer: D

The series can be divided into four groups of four letters each:

T U _ U | _ X W X | T _ T U | W X _ X

By substituting the letters from the correct option (T, W, U, W) into the blanks in sequential order, a repeating pattern of two alternating blocks (T U T U and W X W X) is formed:

T U T U | W X W X | T U T U | W X W X

Thus, the combination TWUW completes the series.

Explanation

The relationship between the letter groups is based on shifting each letter forward by two positions in the English alphabetical order.

Looking at the first pair, KQTO is related to MSVQ: K (11) + 2 = M (13) Q (17) + 2 = S (19) T (20) + 2 = V (22) O (15) + 2 = Q (17)

Similarly, for PVYT and RXAV: P (16) + 2 = R (18) V (22) + 2 = X (24) Y (25) + 2 = A (27, which wraps around to 1) T (20) + 2 = V (22)

Applying this same logic to UADY: U (21) + 2 = W (23) A (1) + 2 = C (3) D (4) + 2 = F (6) Y (25) + 2 = A (27, which wraps around to 1)

This gives the letter combination WCFA.

Explanation

To find the day of the week on 15 September 2009 starting from 18 September 1998, we first calculate the day on 18 September 2009.

The number of years between 18 September 1998 and 18 September 2009 is 11 years (2009 - 1998 = 11).

In this 11-year period, the leap years are 2000, 2004, and 2008, making a total of 3 leap years. The remaining 8 years are ordinary years.

Using the calendar formula for odd days: Total odd days = (Total years + Number of leap years) mod 7 Total odd days = (11 + 3) mod 7 = 14 mod 7 = 0 odd days.

Since there are 0 odd days, 18 September 2009 falls on the same day of the week as 18 September 1998, which is Friday.

To find the day on 15 September 2009, we go back 3 days from 18 September 2009: Friday - 3 days = Tuesday.

Explanation

The series follows an alternating addition pattern where we add 2 and then 4 to consecutive terms.

33 + 2 = 35 35 + 4 = 39 39 + 2 = 41 41 + 4 = 45

Following this pattern, the next step is to add 2 to the last term:

45 + 2 = 47

Explanation

By comparing the letters in the word CRATE and the word TRACK, the common letters are C, R, A, and T.

Similarly, comparing the given codes for these words, 27934 for CRATE and 27694 for TRACK, the common digits are 2, 7, 9, and 4.

This means that the letters C, R, A, and T correspond to the digits 2, 7, 9, and 4 in some order.

The only remaining letter in CRATE is E, and the only remaining digit in its code 27934 is 3. Therefore, the code for E is 3.

Explanation

H is the father of M. Since M is the brother of C, H is also the father of C. It is given that C is the daughter of I. This means H and I are the parents of C. Since H is the father, I must be the mother. Therefore, H is the husband of I.

Explanation

The series follows a pattern where consecutive multiples of 10 are subtracted from each term to obtain the next term.

183 - 10 = 173 173 - 20 = 153 153 - 30 = 123 123 - 40 = 83

Following this pattern, the next term is obtained by subtracting 50 from 83:

83 - 50 = 33

Explanation

The pattern in the series is determined by subtracting 4 from the alphabetical position of each letter in the previous cluster to find the corresponding letter of the next cluster.

For the first letter of each cluster, the alphabetical positions decrease by 4: H (8) - 4 = D (4), D (4) - 4 = Z (26), Z (26) - 4 = V (22), and V (22) - 4 = R (18).

For the second letter of each cluster, the alphabetical positions decrease by 4: T (20) - 4 = P (16), P (16) - 4 = L (12), L (12) - 4 = H (8), and H (8) - 4 = D (4).

For the third letter of each cluster, the alphabetical positions decrease by 4: D (4) - 4 = Z (26), Z (26) - 4 = V (22), V (22) - 4 = R (18), and R (18) - 4 = N (14).

Applying this uniform pattern of subtracting 4 to the second cluster DPZ yields the letter-cluster ZLV.

Explanation

The coding pattern multiplies the total number of letters in each word by 12 to obtain the final code.

For the word WASTE, the number of letters is 5. Code = 5 × 12 = 60

For the word BRANDED, the number of letters is 7. Code = 7 × 12 = 84

For the word CEILINGFANS, the number of letters is 11. Code = 11 × 12 = 132

Explanation

In the given coding scheme, the letters represent specific mathematical operations: A stands for s (split, which represents division, ÷) B stands for c (cross, which represents multiplication, ×) C stands for r (rise, which represents addition, +) D stands for t (take away, which represents subtraction, -)

Substituting these operators into the given equation: 31 + 48 × 7 - 322 ÷ 23

Applying the BODMAS rule: First, perform the division: 322 ÷ 23 = 14

Next, perform the multiplication: 48 × 7 = 336

Finally, perform the addition and subtraction: 31 + 336 - 14 = 367 - 14 = 353

Explanation

The relationship between the letter-clusters in each pair is that each letter of the first cluster is shifted forward by 4 positions in the alphabetical order to obtain the corresponding letter of the second cluster.

In the given pair EAT : IEX: E (5) + 4 = I (9) A (1) + 4 = E (5) T (20) + 4 = X (24)

Similarly, in TGX : XKB: T (20) + 4 = X (24) G (7) + 4 = K (11) X (24) + 4 = B (28, which is 2 after resetting at 26)

Applying the same pattern to QMF : UQJ: Q (17) + 4 = U (21) M (13) + 4 = Q (17) F (6) + 4 = J (10)

Explanation

In the alphabetical series, the letters of the cluster JLN have the positional values J = 10, L = 12, and N = 14. The differences between the consecutive letters are: L - J = 12 - 10 = 2 N - L = 14 - 12 = 2

This constant (+2, +2) increment pattern differs from the (+2, +4) increment pattern followed by the other three letter-clusters.

Explanation

The given series is completed by repeating the four-letter pattern PQRS four times in sequence to form the continuous 16-letter string PQRSPQRSPQRSPQRS.

Placing the letters of option A (P, P, R, R) in the four blanks sequentially: 1st blank: P, which gives PQRS 2nd blank: P, which gives PQRSPQ 3rd blank: R, which gives RSPQ 4th blank: R, which gives RS

Combining these segments yields the complete repeating sequence: PQRS + PQRSPQ + RSPQ + RS = PQRSPQRSPQRSPQRS

This successfully forms four consecutive blocks of PQRS.

Explanation

To find the day on 14 August 2007 from 19 June 2001, we calculate the total odd days between these dates. There are exactly 6 years between 19 June 2001 and 19 June 2007, which includes one leap year (2004), giving 7 odd days (equivalent to 0 odd days), meaning 19 June 2007 is also a Tuesday. From 19 June 2007 to 14 August 2007, there are 56 days, which is exactly 8 weeks (0 odd days), so 14 August 2007 is also a Tuesday.

Explanation

Each letter in the first group is shifted one position backward in the English alphabetical order to obtain the corresponding letter in the second group.

Applying this -1 shift logic to XBOP: X - 1 = W B - 1 = A O - 1 = N P - 1 = O

This yields the word WANO.

Explanation

By substituting the letters with their corresponding mathematical operators based on the given logic: B stands for multiplication (×) A stands for division (÷) C stands for addition (+) D stands for subtraction (-)

The given equation is: 11 B 145 A 29 C 69 D 17

Substituting these operators into the equation: 11 × 145 ÷ 29 + 69 - 17

Applying the BODMAS rule: First, perform the division: 145 ÷ 29 = 5

Next, perform the multiplication: 11 × 5 = 55

Next, perform the addition: 55 + 69 = 124

Finally, perform the subtraction: 124 - 17 = 107

Explanation

The original word is KINGDOM, which consists of the letters K, I, N, G, D, O, and M.

Arranging these letters in alphabetical order yields D, G, I, K, M, N, and O.

Comparing the positions of each letter in the original and sorted sequences: Position 1: K becomes D Position 2: I becomes G Position 3: N becomes I Position 4: G becomes K Position 5: D becomes M Position 6: O becomes N Position 7: M becomes O

None of the letters occupy the same position in both the original word and the alphabetically sorted word.

Explanation

The relationship between the numbers in the given pairs is that the second number is obtained by multiplying the first number by 2 and then adding 1.

For the pair 32:65, 32 × 2 + 1 = 65. For the pair 35:71, 35 × 2 + 1 = 71.

In the pair 30:59, this rule is not followed because 30 × 2 + 1 = 61, which is not equal to 59. Instead, the relationship is 30 × 2 - 1 = 59.

Explanation

To determine which conclusions follow, we analyze the relationships given in the statements.

For conclusion I, there is no negative restriction or boundary defined between the group of Indians and the group of Chinese. In the absence of any negative statements connecting these two groups, any positive possibility between them is logically feasible. Therefore, it is possible that some Chinese are Indians, making conclusion I follow.

For conclusion III, the statements state that some Chinese are Americans, meaning there is an overlap between the Chinese and Americans. Since all Chinese are Russians, the portion of Chinese that overlaps with Americans must also be part of the Russian group. This guarantees an intersection between Americans and Russians, which means some Americans are Russians is definitely true. Thus, conclusion III also follows.

Explanation

The numbers in the given triads (x : y : z) follow a specific mathematical relation where the second number is obtained by dividing the first number by 5, and the third number is obtained by subtracting 2 from the first number.

y = x / 5 z = x - 2

Applying this logic to the first given triad 425 : 85 : 423: 85 = 425 / 5 423 = 425 - 2

Applying this logic to the second given triad 315 : 63 : 313: 63 = 315 / 5 313 = 315 - 2

Similarly, for the triad 235 : 47 : 233: 47 = 235 / 5 233 = 235 - 2

Explanation

The relationship between the first number (x) and the second number (y) in each given pair is determined by the formula y = 6 × x + 3.

Applying this formula to the given pairs: 6 × 16 + 3 = 96 + 3 = 99 6 × 13 + 3 = 78 + 3 = 81

Applying the same formula to the first number in the correct option: 6 × 9 + 3 = 54 + 3 = 57

Explanation

Since R is the father of P, and P is the sister of Q, R is the father of both P and Q. It is given that R is married to S. Since R is the father (male), S must be the mother (female) of P and Q. This is consistent with S being the only child of M and T, making Q the grandson of T. Therefore, S is the mother of P.

Explanation

The number pairs follow the mathematical relationship where the second number is the cube of the first number minus one. This is represented by the formula y = (x - 1)³, where x is the first number and y is the second number.

Applying this formula to the pairs: For the pair 4-27, (4 - 1)³ = 3³ = 27. For the pair 6-125, (6 - 1)³ = 5³ = 125. For the pair 7-216, (7 - 1)³ = 6³ = 216.

For the pair 5-63, applying the formula gives (5 - 1)³ = 4³ = 64. Since 63 ≠ 64, this pair does not follow the established rule and does not belong to the group.

Explanation

The words Astonishing and Incredible are synonyms, sharing a similar meaning of causing great surprise or disbelief. In contrast, the word-pair Descend and Ascend consists of antonyms, which represent opposite actions where descend means to move downward and ascend means to move upward.