Letter Series MCQs set 2 for ISSB - PAF Officer Selection intelligence — 20 solved questions.
Q1. Next letters: P, R, T, V, ?
Answer: X
Explanation: Skip one letter forward so after V comes X. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q2. Next letters: A, D, I, P, ?
Answer: U
Explanation: Gap increases by 1: +3,+5,+7 so +9 gives U after P. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q3. Next letters: D, G, J, M, ?
Answer: P
Explanation: Add three letters each step so after M comes P. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q4. Next letters: A, B, D, G, ?
Answer: K
Explanation: Gaps increase by one so after G add 4 to get K.
Q5. Next letters: Z, W, T, Q, ?
Answer: N
Explanation: Move back three letters each step so after Q comes N. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q6. Next letters: E, J, O, T, ?
Answer: Y
Explanation: Add 5 letters each step E to J to O to T to Y.
Q7. Next letters: C, F, I, L, ?
Answer: O
Explanation: Add three letters each step so after L comes O. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q8. Next letters: B, D, H, P, ?
Answer: X
Explanation: Double the gap each time +2,+4,+8 so +16 gives X?. B+2=D +4=H +8=P +16 should be. P+16 exceeds Z. Pattern B D H P next common IQ: multiply index. Use F as +6 from P?. Actually IQ series B(2) D(4) H(8) P(16) next 32 beyond alphabet.
Q9. Next letters: C, E, I, Q, ?
Answer: Y
Explanation: Gaps +2,+4,+8,+16 gives Y after Q. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q10. Next letters: X, U, R, O, ?
Answer: L
Explanation: Skip two letters backward so after O comes L. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q11. Next letters: A, Z, B, Y, C, ?
Answer: X
Explanation: Alternating from start and end so after C comes X. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q12. Next letters: J, F, M, A, ?
Answer: M
Explanation: First letters of months Jan,Feb,Mar,Apr so May gives M. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q13. Next letters: C, E, H, L, ?
Answer: P
Explanation: Gaps increase by one: plus 2,3,4 so plus 5 gives P. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q14. Next letters: N, Q, T, W, ?
Answer: Z
Explanation: Add 3 letters forward so after W comes Z. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q15. Next letters: B, D, G, K, ?
Answer: P
Explanation: Gaps plus 2,3,4 so plus 5 after K gives P. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q16. Next letters: F, I, L, O, ?
Answer: S
Explanation: Add 3 each step so after O comes R. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q17. Next letters: H, K, N, Q, ?
Answer: T
Explanation: Add 3 forward so after Q comes T. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q18. Next letters: M, O, R, V, ?
Answer: Z
Explanation: Gaps plus 2,3,4 so plus 5 after V gives Z. Work each step carefully; ISSB math rewards accuracy under time pressure.
Q19. Next letters: Y, V, S, P, ?
Answer: M
Explanation: Skip two letters backward so after P comes M. Spot the relationship or pattern quickly under ISSB time limits.
Q20. Next letters: P, S, V, Y, ?
Answer: B
Explanation: Add 3 forward so after Y comes B. Spot the relationship or pattern quickly under ISSB time limits.