Q&A: practice questions with answers

Concept: Pair = a device : the quantity it records.

1. Barometer records air pressure.
2. Odometer (in a vehicle's dashboard) records the total distance covered.
3. Speed is shown by the speedometer, so (B) is a trap.

Trick: Odo = road/way (Greek 'hodos') → distance on the road; Speedo → speed.

Answer: (A) Distance

Concept: Pair = professional : place where he works.

1. A judge hears cases in a court.
2. A doctor attends patients in a hospital.
3. Patient and treatment are linked to the doctor's work, not his workplace.

Trick: Make a sentence: 'A judge works in a ___' → use the same sentence for doctor.

Answer: (D) Hospital

Concept: Each term is a block of 3 consecutive letters, continuing the alphabet.

1. FGH → IJK → LMN: the alphabet simply runs on.
2. Letters after N: O, P, Q.
3. OPR breaks the run (R instead of Q).

Trick: Look only at the last letter: H, K, N → +3 each → Q. Only OPQ ends in Q.

Answer: (A) OPQ

Concept: Blocks of three consecutive letters follow each other.

1. GHI, JKL, MNO cover G to O without a gap.
2. Next three letters: P, Q, R.
3. PQS skips R, so it is out.

Trick: First letters G, J, M jump +3 → next starts with P; then just write P, Q, R.

Answer: (B) PQR

Concept: Each position moves forward by the same step (+3), wrapping after Z.

1. 1st letters: O→R→U→X→A (X+3 crosses Z to A).
2. 2nd letters: Z→C→F→I→L.
3. 3rd letters: E→H→K→N→Q.
4. Next term = ALQ.

Trick: Remember X+3 = A (X=24, 24+3=27 → 27−26=1).

Answer: (C) ALQ

Concept: Study each of the four positions separately; steps may differ.

1. 1st letter: T stays the same.
2. 2nd: G, J, M, P → +3 → S.
3. 3rd: M, S, Y, E → +6 → K (E=5, 5+6=11).
4. 4th: S, B, K, T → +9 → C (20+9=29−26=3).
5. Next = TSKC.

Trick: Steps are +3, +6, +9 (table of 3). Options left after T,S: TSKE and TSKC — check only the last letter.

Answer: (D) TSKC

Concept: Fix the step for each position, wrapping after Z.

1. 1st: D constant.
2. 2nd: D, G, J, M → +3 → P.
3. 3rd: K, P, U, Z → +5 → E.
4. 4th: O, V, C, J → +7 → Q (J=10, 10+7=17).
5. Next = DPEQ.

Trick: Steps +3, +5, +7 are consecutive odd numbers. All options start DP, so check only letters 3 and 4.

Answer: (B) DPEQ

Concept: Each term = previous $\times 2+n$, where $n=1,2,3,\dots$

1. $11=2\times 5+1$, then $24=2\times 11+2$.
2. $51=2\times 24+3$ and $106=2\times 51+4$.
3. Next = $2\times 106+5=217$.

Trick: Terms roughly double: $106\times 2\approx 212$, so the answer is just above 212 → only 217 fits.

Answer: (B) 217

Concept: Sort the letters A→Z, pick the positions, then count the gap in the alphabet.

1. FRIENDLY sorted: DEFILNRY.
2. 2nd from left = E (5); 3rd from right = N (14).
3. Letters between = 14 − 5 − 1 = 8 (F to M).

Trick: Letters between two letters = difference of positions − 1.

Answer: (C) 8

Concept: Compare names, punctuation, block and PIN character by character.

1. No. 1: 'Sanjeev T' has no full stop after T.
2. No. 4: 'Block B' has no hyphen.
3. Nos. 2 and 3 agree in every mark.

Trick: Scan one detail at a time across all four (dot → hyphen → PIN) and strike out the odd ones.

Answer: (B) 2 and 3

Concept: Check every comma, full stop and digit.

1. No. 1: 'Dr' without a dot and no comma after 'Residency'.
2. No. 4: PIN 302010 instead of 302001.
3. Nos. 2 and 3 are exactly the same.

Trick: Always read PIN codes digit by digit — swapped digits are the commonest catch.

Answer: (B) 2 and 3

Concept: Each letter is replaced by its mirror letter (sum of positions = 27).

1. E(5)→V(22), K→P, P→K, T→G: matches VPKG.
2. D(4)→W(23), I(9)→R(18).
3. N(14)→M(13), S(19)→H(8).
4. DINS → WRMH.

Trick: Opposite pairs mnemonic: 'DeW', 'IRa', 'NaMe', 'SHe' → D-W, I-R, N-M, S-H.

Answer: (C) WRMH

Concept: Each letter is written as its place number in the alphabet.

1. B = 2, F = 6 → 2 × 6 (given).
2. E = 5, L = 12.
3. So E × L = 5 × 12.

Trick: EJOTY = 5, 10, 15, 20, 25 → E = 5; L is two after J(10) = 12.

Answer: (C) 5 × 12

Concept: Convert both ranks to the same end, then subtract.

1. Pankaj from left = 50 − 17 + 1 = 34.
2. Ravi from left = 13.
3. Between them = 34 − 13 − 1 = 20.

Trick: Shortcut: Between = Total − (left rank + right rank) = 50 − (13+17) = 20 (when they don't overlap).

Answer: (C) 20

Concept: Break the word into pairs and reverse each pair.

1. PR|OT|OC|OL → RP|TO|CO|LO = RPTOCOLO ✓.
2. PRINTING → PR|IN|TI|NG.
3. Reverse each: RP|NI|IT|GN = RPNIITGN.

Trick: All options begin RPNI; just check the last pair: NG → GN.

Answer: (D) RPNIITGN

Concept: Compare letter by letter to find the shift.

1. LIGHT vs KHFGS: each letter goes back by 1 (L→K … T→S).
2. HOUSE from the end: E→D, S→R, U→T, O→N, H→G.
3. Reading forward, the code = GNTRD.

Trick: Only the last two letters differ among options: S−1 = R and E−1 = D → GNTRD.

Answer: (D) GNTRD

Concept: Decode the phrase step by step from Siya's side.

1. Siya's father's wife = Siya's mother.
2. Mother's son = Siya's brother.
3. That boy is also Ram's brother, so Ram and Siya have the same parents → siblings.

Yaad rakhein: 'Sibling' is a gender-neutral word for brother or sister.

Answer: (B) Sibling

Concept: Terms are squares of consecutive prime numbers.

1. $4=2^2$, $9=3^2$, $25=5^2$, $121={11}^2$.
2. Primes in order: 2, 3, 5, 7, 11.
3. Missing term = $7^2=49$.

Trick: When you see 4, 9, 25 (no 16), think 'prime squares', not 'all squares'.

Answer: (B) 49

Concept: Find the digit sum and test divisibility.

1. 24: $2+4=6$, $24÷6=4$ ✓.
2. 28: sum 10 ✗; 32: sum 5 ✗; 43: sum 7 ✗.
3. Only 24 satisfies the condition.

Trick: Sum 5 or 10 needs the number to end in 0/5 — 32 and 28 are out instantly.

Answer: (A) 24

Concept: In the common pattern, letters move +3 and numbers +4 at each step.

1. P→S→V, 2→6→10 ✓; Q→T→W, 3→7→11 ✓; R→U→X, 4→8→12 ✓.
2. S→V (+3) but V→Z (+4) ✗.
3. 5→8→13 (+3, +5) ✗ — group (D) breaks the rule.

Trick: Check the numbers alone first: equal gaps in three options, unequal only in (D).

Answer: (D) S5 : V8 : Z13