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SSC CGL 24 September 2025 · Shift 1 · General Intelligence & Reasoning — questions with answers · ShikshaSphere

Chapter 145 of 192

24 September 2025 · Shift 1

General Intelligence & Reasoning

25 questions ~25 min readFree

25 questions

Choose the address that is the same as the one given below. House No. 77, Sector 19, Chandigarh - 160019

A.House No. 77, Sector 19, Punjab - 160019
B.House No. 77, Sector 19, Chandigarh - 160019
C.House No. 77, Sector 19, Haryana - 160019
D.House No. 77, Sector 19, Delhi - 160019

Solution

Address matching Only the place name differs across the four options. (a) has Punjab, (c) Haryana and (d) Delhi. The sample names Chandigarh, which only (b) carries. Hence option (b).

The seminar in Lucknow happened 3 days before Patna. The seminar in Ranchi happened 2 days after Patna. If Lucknow's seminar was on 11th November, when was Ranchi's?

A.13th November
B.14th November
C.15th November
D.16th November

Solution

Date reasoning

Lucknow was on 11 November, and Patna came 3 days later. Patna = 11 + 3 = 14 November. Ranchi was 2 days after Patna. 14 + 2 = 16 November — option (d).

What should come in place of the question mark '?' in the following number series? 60, 63, 58, 65, 56, ?

A.69
B.67
C.73
D.66

Solution

Alternating series

The changes alternate: +3, −5, +7, −9, then +11. 60+3 = 63, 63−5 = 58, 58+7 = 65, 65−9 = 56 ✓. Next: 56 + 11. = 67 — option (b).

Find the WRONG term in the given series. 13, 37, 109, 324, 973, 2917

A.973
B.324
C.109
D.37

Solution

×3 − 2 chain

The rule is × 3 − 2 each time. 13×3−2 = 37 ✓, 37×3−2 = 109 ✓, but 109×3−2 = 325, not 324 ✗. Continuing correctly: 325×3−2 = 973 ✓ and 973×3−2 = 2917 ✓. So the wrong term is 324 — option (b).

A number is increased by 25% and then decreased by 25%. What is the net change in the number?

A.6.25% increase
B.6.25% decrease
C.No change
D.6% decrease

Solution

Rise then fall

Net change = a + b +

\frac{ab}{100}

, taking the fall as negative. = 25 − 25 −

\frac{25 \times 25}{100}

. = −6.25. A 6.25% decrease — option (b).

If 6 → 37 and 7 → 50, then 8 → ?

A.62
B.64
C.65
D.66

Solution

n² + 1

Rule: the number is squared and 1 is added. Check: 6² + 1 = 37 ✓ and 7² + 1 = 50 ✓. 8² + 1 = 64 + 1. = 65 — option (c).

Replace the special characters with mathematical signs as given in the options to make a meaningful equation. 10 & 4 $ 6 = 34

A.×, +
B.+, ×
C.−, ×
D.÷, +

Solution

Replace signs

Put + for & and × for $: 10 + 4 × 6. BODMAS: 4 × 6 = 24. 10 + 24. = 34 ✓ — option (b).

Select the one that is different.

A.Microsoft Office
B.Anti-virus
C.Motherboard
D.Adobe Photoshop

Solution

Software vs hardware

Microsoft Office, anti-virus and Adobe Photoshop are all SOFTWARE programs. A motherboard is a piece of hardware inside the computer. So it belongs to a different category. Hence option (c).

Find the ODD one out from the given options. (Note: Operations should be performed on the whole numbers, without breaking them into their constituent digits.)

A.285
B.208
C.323
D.247

Solution

Divisible by 19

Test each for divisibility by 19. 285 = 19 × 15 ✓, 323 = 19 × 17 ✓ and 247 = 19 × 13 ✓. 208 = 19 × 10 + 18, so it is not divisible by 19 ✗. Hence option (b).

In a certain code language, 'work on him twice' is coded as 'wl, dl, kl, sl', 'him fast twice' is coded as 'kl, jl, sl' and 'case on him' is coded as 'pl, dl, kl'. How will 'on fast work' be coded in the same language?

A.dl, kl, wl
B.dl, jl, wl
C.pl, jl, wl
D.dl, sl, wl

Solution

Code language

"him" appears in all three lines and kl is the only common code ⇒ him = kl. Lines 1 and 2 share "twice" besides "him", so twice = sl; lines 1 and 3 share "on" ⇒ on = dl. From line 1 the code left for "work" is wl, and from line 2 the one left for "fast" is jl. So on fast work = dl, jl, wl — option (b).

A sum of money becomes ₹5,720 after 3 years and ₹6,292 after 4 years at compound interest. What is the rate of interest per annum?

A.8%
B.10%
C.12%
D.15%

Solution

CI from two amounts

The amount at the end of the 4th year is the 3rd-year amount grown by one year’s interest.

\frac{6292}{5720}

= 1.1. So the growth factor is 1.1, i.e. 10% per year. Rate = 10% — option (b).

Find the missing number: 53 : 34 :: 34 : ?

A.23
B.25
C.27
D.33

Solution

Sum of squares of digits

Rule: square each digit and add. Check: 5² + 3² = 25 + 9 = 34 ✓. 3² + 4² = 9 + 16. = 25 — option (b).

Read the following statements carefully and identify the conclusion that follows. Statements: No chairs are tables. All tables are wooden. Conclusions: I. Some wooden things are not chairs. II. No chairs are wooden.

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

Solution

Syllogism

All tables are wooden, and no chair is a table — so those wooden things (the tables) are not chairs. That makes I certain. Chairs outside the table group may still be wooden, so II is not certain. Only I — option (a).

Read the following statements carefully and identify the conclusion that follows. Statements: All teachers are intelligent. No intelligent is poor. Some poor are lazy. Conclusions: I. Some teachers are lazy. II. No intelligent is poor.

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

Solution

Syllogism

Conclusion II simply repeats the second statement, so it certainly follows. For I, the lazy people come from the POOR group, and no intelligent person is poor. Since all teachers are intelligent, no teacher can be poor, so nothing links teachers to the lazy — I does not follow. Only II — option (b).

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

A.ACUTE
B.SCENE
C.CAUSE
D.ACTION

Solution

Word from letters

ACCESATION has A, C, C, E, S, A, T, I, O, N. ACTION needs A, C, T, I, O, N — all available ✓. ACUTE and CAUSE need U, and SCENE needs two Es — neither is available. Hence option (d).

What comes next in the series? W, T, Q, N, ?

Solution

Letter series (−3)

Each letter moves three places back. W(23) → T(20) → Q(17) → N(14). 14 − 3 = 11, which is K. Hence option (b).

What is the next number in the series? 30, 90, 270, ?

A.740
B.760
C.810
D.820

Solution

Series (×3)

Each term is three times the previous one. 30 × 3 = 90 and 90 × 3 = 270 ✓. 270 × 3. = 810 — option (c).

If "SANI" is written as "UCPK", how will "SAMU" be written?

A.UCPW
B.TBOU
C.UCOV
D.UCOW

Solution

Coding (+2)

Every letter moves +2: S+2 = U, A+2 = C, N+2 = P, I+2 = K. Apply to SAMU: S+2 = U, A+2 = C. M+2 = O, U+2 = W. Hence UCOW — option (d).

Complete the series. 1, 27, ?, 343

A.216
B.125
C.225
D.64

Solution

Cubes of odd numbers

These are the cubes of consecutive ODD numbers. 1³ = 1, 3³ = 27, 5³ = ?, 7³ = 343. 5³ = 125. Hence option (b).

Which option will come next in the following series? BL, CN, DP, ?

A.GV
B.ET
C.FS
D.ER

Solution

Letter pairs (+1, +2)

1st letters: B, C, D — each +1 ⇒ next is E. 2nd letters: L, N, P — each +2 ⇒ next is R. So the pair is E and R. Hence ER — option (d).

If P : Q = 3 : 4 and Q : R = 2 : 5, find P : R.

A.3 : 10
B.2 : 5
C.5 : 9
D.3 : 5

Solution

Combining ratios

Make Q the same in both ratios: P : Q = 3 : 4 and Q : R = 2 : 5. Multiply the first by 2 and the second by 4: P : Q = 6 : 8 and Q : R = 8 : 20. So P : Q : R = 6 : 8 : 20. P : R = 6 : 20 = 3 : 10 — option (a).

If LAPTOP is coded as MBQUPQ, how is COMPUTER coded in the same code?

A.DPQQVUFS
B.DPNQQVGS
C.DONQVUFS
D.DPNQVUFS

Solution

Coding (+1)

Every letter moves +1: L+1 = M, A+1 = B, P+1 = Q, T+1 = U, O+1 = P, P+1 = Q. Apply to COMPUTER: C+1 = D, O+1 = P, M+1 = N, P+1 = Q. U+1 = V, T+1 = U, E+1 = F, R+1 = S. Hence DPNQVUFS — option (d).