SSC CGL 2025 PYQs

Concept: Tick every condition; one failure makes the candidate ineligible.

1. Graduation 62% (need ≥ 55%) ✓
2. Typing 50 WPM (need ≥ 45) ✓
3. DCA held ✓; age 26 (21–30) ✓
4. All four met → eligible.

Trick: Make a quick ✓/✗ column for each condition – no need to reread the case.

Answer: (A) Eligible

Concept: Replace letters by signs, then use BODMAS.

1. 6 B 2 A 4 C 3 D 1 → $6\times 2+4-3÷1$.
2. × and ÷ first: $12+4-3$.
3. = 13.

Trick: Write the decoded sign above each letter before solving – avoids mix-ups.

Answer: (B) 13

Concept: Change the signs as told and evaluate each option.

1. A: 8 + 2 × 3 → $8\times 2+3=16+3=19$ ✓
2. B: $15\times 3÷6=7.5$ ✗; C: $12-6\times 3=-6$ ✗
3. D: $10÷2\times 3=15$ ✗
4. Only A balances.

Trick: Start with the option having the fewest operations – often settles quickly.

Answer: (A) 8 + 2 × 3 = 19

Concept: First priority with an infectious patient is to stop the spread.

1. Isolation keeps other patients and staff safe; the doctor must know at once.
2. Waiting area (B) spreads infection.
3. Forms (C) and family call (D) can come after safety.

Trick: In “first step” questions choose the option that prevents harm immediately.

Answer: (A) Immediately isolate Shyam and inform the doctor on duty.

Concept: Swap + ↔ − and × ↔ ÷, then apply BODMAS.

1. 100 ÷ 4 + 30 − 50 × 10 → $100\times 4-30+50÷10$.
2. = $400-30+5$.
3. = 375.

Trick: Unit digit check: $400-30+5$ ends in 5 → only 475 or 375; $400-25=375$.

Answer: (D) 375

Concept: Look at the differences between terms.

1. 97→91→82→70→55: −6, −9, −12, −15.
2. Next difference −18.
3. 55 − 18 = 37.

Trick: Differences are multiples of 3 (6, 9, 12, 15…) – next is 18.

Answer: (B) 37

Concept: “All A are B” + “Some B are C” gives no definite link between A and C.

1. Draw pencils inside erasers; boxes touch erasers only partly.
2. Boxes can overlap the eraser area outside pencils – so “Some boxes are pencils” is not certain.
3. “All pencils are boxes” is even less certain.
4. Neither follows.

Trick: All + Some (in this order) → no conclusion between the end terms.

Answer: (A) Neither I nor II follows

Concept: Each letter is written as its alphabet position.

1. B=2, A=1, T=20 → BAT = 2-1-20.
2. TAB → T=20, A=1, B=2.
3. Code = 20-1-2.

Trick: TAB is BAT reversed, so its code is just the reverse: 20-1-2.

Answer: (A) 20-1-2

Concept: Every letter is replaced by the letter just before it.

1. N→M, A→Z, R→Q, D→C, E→D, O→N (−1 each).
2. RZQBDO: R→Q, Z→Y, Q→P, B→A, D→C, O→N.
3. Code = QYPACN.

Trick: Check only the 4th letter: B−1 = A – only option B has A there.

Answer: (B) QYPACN

Concept: Split the series into odd and even positions.

1. Odd places: 4, 12, 36, 108, 325 → ×3 rule gives 324, so 325 is wrong.
2. Even places: 9, 12, 17, 18, 21 → +3 rule gives 9, 12, 15, 18, 21, so 17 is wrong.
3. Wrong pair: 17, 325.

Trick: 325 is not divisible by 3 while the others in its series are – a quick red flag.

Answer: (C) 17, 325

Concept: Convert letters to alphabet ranks and study the jumps.

1. C=3, E=5, H=8, L=12 → jumps +2, +3, +4.
2. 5th letter: 12 + 5 = 17 = Q.
3. 6th letter: 17 + 6 = 23 = W.

Trick: Remember EJOTY (5, 10, 15, 20, 25): W sits just before Y(25), so 23 = W instantly.

Answer: (B) W

Concept: Compare every part of the address character by character.

1. (B) writes 'R' in place of 'Road'.
2. (C) has Plot No. 92 instead of 29.
3. (D) writes 'Pk' in place of 'Park'.
4. Only (A) matches fully.

Trick: Scan numbers first (plot no., PIN), then abbreviations – most fakes differ there.

Answer: (A) Plot No. 29, Kamala Nehru Park, Walkeshwar Road, Malabar Hill, Mumbai, Maharashtra 400006

Concept: An inference must follow logically from the statement, without outside assumptions.

1. Offering free digital books is a step to draw more readers → I follows.
2. Nothing in the statement talks about cost of printed books → II is a guess, not an inference.

Trick: Reject any inference that introduces a new reason (cost, loss, problem) not hinted at in the statement.

Answer: (A) Only I follows

Concept: Track each position of the cluster separately.

1. 1st letters J, G, D, A: −3 each → A − 3 = X.
2. 2nd letters H, M, R, W: +5 each → W + 5 = B (after Z).
3. 3rd letters N, Q, T, W: +3 each → W + 3 = Z.
4. Next term = XBZ.

Trick: Check only the first letter: A − 3 = X; only option (C) starts with X.

Answer: (C) XBZ

Concept: Try each option and solve using BODMAS.

1. (A) $30\times 10-8=292$ ✗
2. (B) $30÷10-8=-5$ ✗
3. (C) $30+10\times 8=30+80=110$ ✓

Trick: 110 is close to $30+80$, so look for '+' with a product $10\times 8=80$.

Answer: (C) +, ×

Concept: Successive terms are divided by 6, 5, 4, 3, 2.

1. $720÷6=120$ ✓
2. $120÷5=24$, but 142 is given ✗
3. आगे 24 को ÷4 करने पर 6, फिर ÷3 से 2, फिर ÷2 से 1 ✓

Trick: A decreasing series cannot jump up: 120 → 142 is an increase, so 142 is the odd term.

Answer: (C) 142

Concept: Read the chain linking the two letters directly.

1. I: U = E ≤ P gives U ≤ P → true.
2. II: U = E, so E < U is impossible → false.

Trick: When the statement shows '=', any strict '<' or '>' between those two letters is always false.

Answer: (C) Only I

Concept: Find the common category of three items.

1. Apple, Mango and Banana are fruits.
2. Lotus is a flower (India's national flower).

Yaad rakhein: Mango is the national fruit and Lotus the national flower of India.

Answer: (C) Lotus

Concept: Last two digits should equal first two digits + 70.

1. 20 + 70 = 90 ✓ (20K90)
2. 15 + 70 = 85 ✓; 25 + 70 = 95 ✓
3. 10 + 70 = 80, but 10K85 shows 85 ✗

Trick: The units digit of first and last part must be the same (+70 does not change it): 10 → 85 breaks this.

Answer: (D) 10K85

Concept: Group crops by use.

1. Wheat, Rice, Millet are food grains (cereals).
2. Coffee is a plantation/beverage crop.

Yaad rakhein: Plantation crops of India: tea, coffee, rubber, spices – mostly grown in hilly/south regions.

Answer: (D) Coffee