ISSB Academic & Intelligence Test intelligence: Letter Series MCQs

Practice Letter Series MCQs for ISSB Academic & Intelligence Test intelligence — topic-wise sets with solved answers.

ISSB Academic & Intelligence Test intelligence: Letter Series MCQs — sample questions

  1. Question 1

    Q1. Complete the series: AZ, BY, CX, ?

    • A) DW
    • B) EV
    • C) DU
    • D) DX

    Answer: DW

    Explanation: First letters ascend A,B,C,D; second letters descend Z,Y,X,W → DW. Watch both columns in alphabet series.

  2. Question 2

    Q2. Complete: ACE, GIK, MOQ, ?

    • A) SUW
    • B) STU
    • C) TUV
    • D) UVW

    Answer: SUW

    Explanation: Each group skips 5 letters: A→G→M→S; C→I→O→U; E→K→Q→W. Identify the relationship between the pair, then apply the same logic to the choices.

  3. Question 3

    Q3. Complete the series: Z, X, V, T, ?

    • A) R
    • B) S
    • C) Q
    • D) P

    Answer: R

    Explanation: Skip one letter backwards in the alphabet: Z, X, V, T, R.

  4. Question 4

    Q4. Find the next letter in the series: B, D, F, H, J, ?

    • A) K
    • B) L
    • C) M
    • D) N

    Answer: L

    Explanation: Every letter skips one alphabet, moving forward by two positions each time. After J comes L.

  5. Question 5

    Q5. Find the next letter: P, O, N, M, L, ?

    • A) K
    • B) J
    • C) I
    • D) H

    Answer: K

    Explanation: The series counts backward through the alphabet by one letter each step. After L comes K.

  6. Question 6

    Q6. Complete the forward alphabet series: M, N, O, P, Q, ?

    • A) S
    • B) T
    • C) R
    • D) U

    Answer: R

    Explanation: The letters follow the standard alphabetical order without skipping. After Q comes R.

  7. Question 7

    Q7. What comes next in the series: A, C, E, G, ?

    • A) H
    • B) I
    • C) J
    • D) K

    Answer: I

    Explanation: The series skips one letter each time: A, C, E, G, then I. Each step moves two places in the alphabet.

  8. Question 8

    Q8. What comes next: B, D, G, K, ?

    • A) N
    • B) O
    • C) P
    • D) Q

    Answer: P

    Explanation: The gaps increase by one each time: plus 2, plus 3, plus 4, then plus 5. K plus 5 letters is P.

  9. Question 9

    Q9. Find the next letters: ACE, BDF, CEG, ?

    • A) DFH
    • B) DFI
    • C) DEH
    • D) EFH

    Answer: DFH

    Explanation: Each letter moves one step forward in the alphabet across the series. CEG becomes DFH.

  10. Question 10

    Q10. Find the next letters: ZY, XW, VU, ?

    • A) TS
    • B) ST
    • C) TR
    • D) RS

    Answer: TS

    Explanation: Pairs move backward through the alphabet. After VU comes TS. Work each step carefully; ISSB math rewards accuracy under time pressure.

  11. Question 11

    Q11. Find the next letters: AB, CD, EF, ?

    • A) GH
    • B) HI
    • C) FG
    • D) IJ

    Answer: GH

    Explanation: Pairs move forward through the alphabet. After EF comes GH. Work each step carefully; ISSB math rewards accuracy under time pressure.

  12. Question 12

    Q12. Find the next letters: AZ, BY, CX, ?

    • A) DW
    • B) DV
    • C) EW
    • D) DU

    Answer: DW

    Explanation: First letters move forward and second letters move backward. After CX comes DW.

  13. Question 13

    Q13. Next letters: ACE, GIK, MOQ, ?

    • A) SUW
    • B) SVW
    • C) RTV
    • D) SUX

    Answer: SUW

    Explanation: Each letter jumps two steps. After MOQ comes SUW. Work each step carefully; ISSB math rewards accuracy under time pressure.

  14. Question 14

    Q14. Next: AZ, CX, EV, ?

    • A) GT
    • B) GS
    • C) HT
    • D) GU

    Answer: GT

    Explanation: First letters move +2 and second letters move -2. After EV comes GT.

  15. Question 15

    Q15. Next letters: BD, FH, JL, ?

    • A) NP
    • B) NO
    • C) MP
    • D) NQ

    Answer: NP

    Explanation: Each letter jumps two steps. After JL comes NP. Work each step carefully; ISSB math rewards accuracy under time pressure.

  16. Question 16

    Q16. Next: AC, EG, IK, ?

    • A) MO
    • B) MN
    • C) NO
    • D) MP

    Answer: MO

    Explanation: Letters jump three steps. After IK comes MO. Work each step carefully; ISSB math rewards accuracy under time pressure.

  17. Question 17

    Q17. Next letters: A, C, E, G, ?

    • A) H
    • B) I
    • C) J
    • D) K

    Answer: I

    Explanation: Letters skip one alphabet so after G comes I. Work each step carefully; ISSB math rewards accuracy under time pressure.

  18. Question 18

    Q18. Next letters: Z, X, V, T, ?

    • A) R
    • B) S
    • C) P
    • D) Q

    Answer: R

    Explanation: Skip one letter backward so after T comes R. Work each step carefully; ISSB math rewards accuracy under time pressure.

  19. Question 19

    Q19. Next letters: B, E, H, K, ?

    • A) M
    • B) N
    • C) O
    • D) P

    Answer: N

    Explanation: Add 3 letters each step so after K comes N. Work each step carefully; ISSB math rewards accuracy under time pressure.

  20. Question 20

    Q20. Next letters: M, J, G, D, ?

    • A) A
    • B) B
    • C) C
    • D) E

    Answer: A

    Explanation: Skip two letters backward each step so after D comes A. Work each step carefully; ISSB math rewards accuracy under time pressure.

Loading...