Q&A: practice questions with answers

Concept: Each word's code = 2 × (sum of alphabet positions of its letters).

1. TDYI: $20+4+25+9=58$ → $58\times 2=116$ ✔
2. NRDP: $14+18+4+16=52$ → $52\times 2=104$ ✔
3. LAWG: $12+1+23+7=43$ → $43\times 2=86$

Trick: Code ÷ 2 gives a neat whole number (58, 52) – a strong hint that the rule is 'sum × 2'.

Answer: (C) 86

Concept: Show a subset fully inside its parent class, and a class that only partly matches as an overlapping circle.

1. Every surgeon is a doctor → Surgeons circle lies inside Doctors.
2. Some doctors are men, some are not → Men cuts the Doctors circle.
3. Some surgeons are men, some are women → Men also cuts the Surgeons circle.

Trick: Ask 'Is every X a Y?' for each pair – 'yes' means circle-inside-circle; 'some' means overlap.

Answer: (B) the diagram with Surgeons inside Doctors and Men crossing both

Concept: Split the series into equal blocks; the same letter-position in each block follows one step rule.

1. With VWQRP the line becomes VYUX | TWSV | RUQT | PSOR | NQMP.
2. 1st letters: V, T, R, P, N (−2 each).
3. 2nd letters: Y, W, U, S, Q; 3rd: U, S, Q, O, M; 4th: X, V, T, R, P – all −2.

Trick: 5 blanks in 20 letters → try blocks of 4; the first blank must be 2 ahead of T (from 'T_SV'), so it is V – only (B) and (D) remain.

Answer: (B) VWQRP

Concept: Decode each symbol one by one and fix the gender of every person.

1. A + H → A is H's daughter, so H is A's parent.
2. H @ S → H is S's sister, so H is female → H is A's mother.
3. S − C → S is C's son, so S is male.
4. S is the brother of A's mother.

Trick: Gender of the middle person (H) comes from '@ = sister' – that is the key to 'mother' instead of 'father'.

Answer: (D) Mother's brother

Concept: A vertical mirror (LM) swaps left and right only; top and bottom stay the same.

1. Every part on the right edge of the figure moves to the left edge in the image, and vice versa.
2. Parts at the top stay at the top; parts at the bottom stay at the bottom.
3. Match the thick border bands and the inner lines: only option (D) shows them flipped sideways with no up-down change.

Trick: First eliminate any option where the figure is turned upside down – with a side mirror the vertical order never changes.

Answer: (D) the figure in option (D)

Concept: Swap the signs first, then solve using BODMAS.

1. After swapping: $45+2\times 8-2÷2$
2. × and ÷ first: $2\times 8=16$, $2÷2=1$
3. $45+16-1=60$

Trick: Rewrite the whole expression with new signs before calculating – mixing old and new signs is the usual mistake.

Answer: (B) 60

Concept: Faces seen together in any view are neighbours, never opposite.

1. View 1: A is with N and R.
2. View 2: A is with D and G.
3. So A touches N, R, D, G; the only face left for A's opposite is E.

Trick: Find the letter that appears in both views – it has 4 known neighbours, so its opposite is the one letter never seen with it.

Answer: (C) A

Concept: Track the 1st, 2nd and 3rd letters of the clusters as three separate series.

1. 1st: M, J, G, D → −3 each → A
2. 2nd: T, R, P, N → −2 each → L
3. 3rd: D, C, B, A → −1 each → Z (after A comes Z, wrapping around)

Trick: Only the first letter is enough here: D − 3 = A, and only option (D) begins with A.

Answer: (D) ALZ

Concept: Facing north, the person's right is our right; join the 'immediate' blocks into one row.

1. D _ B _ F: B is right of D and left of F → D B F
2. F, A, E: A right of F, left of E → D B F A E
3. E, G, C: G right of E, left of C → D B F A E G C

Trick: The person who never appears as anyone's 'right' neighbour is the left-most – here D.

Answer: (D) D

Concept: Every letter of the first group is shifted back by the same number to get the second group.

1. NRNL → IMIG: each letter −5 (N→I, R→M, L→G).
2. Check: PTPN → KOKI, also −5 ✔
3. DHDB − 5: D→Y, H→C, D→Y, B→W → YCYW

Trick: Pattern check: in DHDB the 1st and 3rd letters are the same, so the answer must have 1st = 3rd – only YCYW fits.

Answer: (A) YCYW

Concept: Two 'some' statements in a chain give no definite link between the end terms.

1. Sprouts ⊂ Lentils; Lentils–Ramens overlap only partly.
2. The ramen part of lentils may lie outside sprouts → 'Some ramens are sprouts' is not certain.
3. Pastas are linked only to ramens, so 'Some pastas are sprouts' is also not certain.

Trick: Try to draw a diagram where the conclusion fails; if you can, it does not follow.

Answer: (B) Neither conclusion (I) nor (II) follows.

Concept: Write the word and its alphabetically sorted form one below the other and compare position by position.

1. Word: M I G H T Y
2. Sorted: G H I M T Y
3. Same place: T (5th) and Y (6th) → 2 letters

Trick: Letters already at the end in increasing order (T, Y here) usually stay put – check the tail first.

Answer: (A) Two

Concept: Apply the same change to each part: 1st letter, 2nd letter and the number.

1. CJ 16 → DF 9: C +1, J −4, 16 − 7.
2. FK 9 → GG 2: F +1, K −4, 9 − 7 ✔
3. OO 2 → O+1 = P, O−4 = K, 2 − 7 = −5 → PK −5

Trick: Number part alone decides it: 2 − 7 = −5, and only option (A) has −5.

Answer: (A) PK −5

Concept: Each figure adds one ray from the centre, turning in a fixed clockwise order.

1. Rays in the boxes: 1, 2, 3, 4 → next must have 5.
2. New rays appear one step clockwise each time (E, SE, S, SW …), so the 5th points W.
3. Option (A) has exactly these five rays.

Trick: Count first – discard every option without 5 rays, then check the direction of the newest one.

Answer: (A) the figure in option (A)

Concept: Differences between terms rise by a constant amount (+3).

1. Differences: 3, 6, 9, 12, 15
2. Missing term = $25+12=37$
3. Check: $37+15=52$ ✔

Trick: Differences are 3 × 1, 3 × 2, 3 × 3 … – the table of 3.

Answer: (C) 37

Concept: In three clusters the letters advance by the same gap (+7, +7); find the cluster that breaks it.

1. UBI: U+7 = B, B+7 = I ✔ (wrap after Z)
2. SZG: +7, +7 ✔; KRY: +7, +7 ✔
3. BIO: gaps are +7 then only +6 (I to O) ✘

Trick: Compare first and last letters: a +14 jump in the three alike clusters, only +13 in BIO.

Answer: (A) BIO

Concept: Any two faces visible together are adjacent; the face never seen with a letter is its opposite.

1. View 1: E is with H and R.
2. View 2: E is with T and F.
3. E is adjacent to H, R, T, F → its opposite is A, so A is opposite E.

Trick: The letter common to both views has four known neighbours – the sixth letter sits opposite it.

Answer: (A) E

Concept: The terms go up and down, so split them into odd-place and even-place series.

1. Odd places: 670, 671, 673, 676 (+1, +2, +3)
2. Even places: 668, 666, 662, ? (−2, −4, −6)
3. 8th term (even place): 662 − 6 = 656

Trick: Up-down zig-zag almost always means two hidden series – 8th term belongs to the even one.

Answer: (B) 656

Concept: Letters common to both words take the digits common to both codes.

1. DAYS = 7812, AIDS = 1237
2. Common letters D, A, S ↔ common digits 7, 1, 2
3. Extra letter in AIDS is I, extra digit in 1237 is 3 → I = 3

Trick: Cancel the common items; the leftover letter matches the leftover digit.

Answer: (B) 3

Concept: Facing the centre, a person's left is clockwise and right is anticlockwise.

1. Number seats clockwise: K = 1, L = 2 (K is L's right).
2. M is 4 seats clockwise from K → M = 5; three between L and H → H = 6.
3. J is I's immediate right (anticlockwise) → I = 4, J = 3, G = 7.
4. From the left of I (clockwise): M, H, G, K, then L → 4 people.

Yaad rakhein: For facing-centre seating: left = clockwise, right = anticlockwise; for facing-outside it reverses.

Answer: (A) Four