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SSC CGL 23 September 2025 · Shift 2 · General Intelligence & Reasoning — questions with answers · ShikshaSphere

Chapter 137 of 192

23 September 2025 · Shift 2

General Intelligence & Reasoning

25 questions ~25 min readFree

25 questions

Choose the address that is the same as the one given below. Sample Address: House No. 25, Green Park, Saket, New Delhi - 110017

A.House 25, Green Park, Saket, New Delhi - 110017
B.House No. 25, Green Park, Saket, New Delhi - 110017
C.House No. 25, Green Park, South Delhi - 110007
D.House No. 35, Green Park, Saket, New Delhi - 110017

Solution

Address matching (a) drops 'No.'; (c) changes Saket to South Delhi and the PIN to 110007. (d) changes the house number to 35. Only (b) matches the sample exactly. Hence option (b).

In a series of seminars held daily from 11th to 18th February 2022: Ahmedabad – 18 Feb, Lucknow – 12 Feb, Mysuru – 17 Feb, Nagpur – 11 Feb, Bhopal – 14 Feb, Guwahati – 13 Feb, Indore – 15 Feb, Visakhapatnam – 16 Feb. How many days after the seminar in Nagpur did the seminar in Mysuru occur?

A.6 days
B.5 days
C.4 days
D.7 days

Solution

Date gap

Nagpur’s seminar was on 11 February. Mysuru’s seminar was on 17 February. Difference = 17 − 11. = 6 days — option (a).

If 5 × 6 = 31 and 6 × 7 = 43, then 7 × 8 = ?

A.55
B.56
C.57
D.54

Solution

Product + 1

Rule: (first number × second number) + 1. Check: 5×6 + 1 = 31 ✓ and 6×7 + 1 = 43 ✓. 7 × 8 + 1 = 56 + 1. = 57 — option (c).

If 3 × 4 = 15, 4 × 5 = 24 and 5 × 6 = 35, then 6 × 7 = ?

A.48
B.47
C.45
D.50

Solution

Product + first number

Rule: (first × second) + first number. Check: 3×4 + 3 = 15 ✓, 4×5 + 4 = 24 ✓, 5×6 + 5 = 35 ✓. 6 × 7 + 6 = 42 + 6. = 48 — option (a).

The product of two numbers is 1800 and their HCF is 20. What is their LCM?

A.80
B.90
C.100
D.120

Solution

HCF × LCM

For any two numbers, HCF × LCM = product of the numbers. 20 × LCM = 1800. LCM =

\frac{1800}{20}

. = 90 — option (b).

If A + B = 2C and C + D = 2A, then:

A.A + C = B + D
B.A + D = 2D
C.A + D = B + C
D.A + C = 2B

Solution

Algebraic relation

Add the two equations: A + B + C + D = 2C + 2A. Cancel one A and one C from each side: B + D = A + C. So A + C = B + D. Hence option (a).

Choose the different one.

A.Google Chrome
B.Mozilla Firefox
C.Microsoft Edge
D.Intel

Solution

Browsers vs chipmaker

Chrome, Firefox and Edge are all WEB BROWSERS. Intel is a company that manufactures processors and chips. So it belongs to a different category. Hence option (d).

A car covers a distance of 100 km in 1 hour 15 minutes. What is its speed in km/h?

A.70 km/h
B.75 km/h
C.80 km/h
D.85 km/h

Solution

Speed

1 hour 15 minutes =

\frac{5}{4}

hours. Speed =

\frac{distance}{time}

= 100 ÷

\frac{5}{4}

. = 100 ×

\frac{4}{5}

. = 80 km/h — option (c).

Find the missing number: 574 : 82 :: 21 : ?

Solution

Divide by 7

Rule: the second number is the first divided by 7. Check:

\frac{574}{7}

= 82 ✓.

\frac{21}{7}

. = 3 — option (c).

Which number has a digital root equal to 6? (Digital root = sum of digits until one digit remains.)

A.852963
B.741258
C.654321
D.999997

Solution

Digital root

852963 → 8+5+2+9+6+3 = 33 → 3+3 = 6 ✓. 741258 → 27 → 9; 654321 → 21 → 3. 999997 → 52 → 7. Hence 852963 — option (a).

From the list of roll numbers given below, which pair belongs to the same examination centre (i.e. has the same first three digits as centre code)? Column A: 452781, 673452, 784512, 451876 Column B: 672345, 452239, 673899, 674210 Column C: 781245, 452890, 781376, 672765 Column D: 781998, 672876, 453120, 782134

A.452239 and 452890
B.672345 and 673452
C.781245 and 782134
D.452239 and 453120

Solution

Same centre code

Compare only the first three digits of each pair. 452239 and 452890 both begin with 452 ✓. In (b) they are 672 and 673; in (c) 781 and 782; in (d) 452 and 453. Hence option (a).

Read the following statements carefully and identify the conclusion that follows. Statements: All teachers are educated. Some educated people are scientists. Conclusions: I. Some scientists are teachers. II. Some teachers are educated.

A.Only I follows
B.Only II follows
C.Both I and II follow
D.Neither I nor II follows

Solution

Syllogism

All teachers are educated, so certainly some teachers are educated — II follows. The scientists come from the educated group, but may lie entirely outside the teacher part of it. So I is only a possibility, not a certainty. Only II — option (b).

Read the following statements carefully and identify the conclusion that follows. Statements: All dogs are animals. Some animals are wild. No wild animal is domestic. Conclusions: I. Some dogs are not domestic. II. All animals are dogs.

A.Only I follows
B.Only II follows
C.Both I and II follow
D.Neither I nor II follows

Solution

Syllogism

Dogs lie inside animals, but nothing places them in the WILD part of that group. So we cannot say any dog is non-domestic — I does not follow. "All dogs are animals" never reverses into "all animals are dogs" — II does not follow. Neither follows — option (d).

What comes next in the series? H, L, P, T, ?

Solution

Letter series (+4)

Each letter moves four places forward. H(8) → L(12) → P(16) → T(20). 20 + 4 = 24, which is X. Hence option (b).

From the given alternatives, find the word which can be formed from the letters used in the given word. DEVELOPMENT

A.DEEP
B.MADE
C.BEND
D.PLANT

Solution

Word from letters

DEVELOPMENT has D, E, V, E, L, O, P, M, E, N, T. DEEP needs D, E, E, P — all available ✓. MADE and PLANT need A, and BEND needs B — neither letter is present. Hence option (a).

If "NEHRU" is written as "OFISV", how will "GANDHI" be written?

A.HBPEJK
B.HBOEIJ
C.HBQFIJ
D.HBQEIK

Solution

Coding (+1)

Every letter moves +1: N+1 = O, E+1 = F, H+1 = I, R+1 = S, U+1 = V. Apply to GANDHI: G+1 = H, A+1 = B, N+1 = O. D+1 = E, H+1 = I, I+1 = J. Hence HBOEIJ — option (b).

What comes next? CH, EJ, GL, ?

A.KN
B.IM
C.JM
D.IN

Solution

Letter pairs (+2)

1st letters: C, E, G — each +2 ⇒ next is I. 2nd letters: H, J, L — each +2 ⇒ next is N. So the pair is I and N. Hence IN — option (d).

Complete the series. 7, 15, 31, 63, ?

A.125
B.126
C.127
D.128

Solution

Series (×2 + 1)

Each term = previous × 2 + 1. 7×2+1 = 15, 15×2+1 = 31, 31×2+1 = 63 ✓. Next: 63 × 2 + 1 = 126 + 1. = 127 — option (c).

Find the missing number: 225 : 3375 :: 256 : ?

A.3375
B.3125
C.4225
D.4096

Solution

Square and cube

225 = 15² and 3375 = 15³, so the rule is square → cube of the same number. 256 = 16². So the answer is 16³. 16 × 16 × 16 = 4096 — option (d).

What should come at the place of the question mark? 63, 127, 255, 511, 1023, ?

A.2047
B.2095
C.2147
D.2067

Solution

Series (×2 + 1)

Each term = previous × 2 + 1. 63×2+1 = 127, 127×2+1 = 255, 255×2+1 = 511, 511×2+1 = 1023 ✓. Next: 1023 × 2 + 1 = 2046 + 1. = 2047 — option (a).

In a code language: 'cat dog rat' is coded as 'xya, pyq, lmn' 'dog lion cat' is coded as 'pyq, rso, xya' 'lion rat tiger' is coded as 'rso, lmn, tuv' What is the code for 'dog lion tiger'?

A.pyq, rso, tuv
B.xya, rso, tuv
C.pyq, lmn, tuv
D.pyq, rso, lmn

Solution

Code language

Lines 1 and 2 share "cat" and "dog"; lines 2 and 3 share "lion" ⇒ lion = rso. Lines 1 and 3 share "rat" ⇒ rat = lmn, so from line 1, cat and dog take xya and pyq. From line 2, removing lion (rso) and cat leaves dog = pyq; tiger is the code left in line 3 = tuv. So dog lion tiger = pyq, rso, tuv — option (a).