ISSB - PAF Officer Selection intelligence: Letter Coding MCQs

Practice Letter Coding MCQs for ISSB - PAF Officer Selection intelligence — topic-wise sets with solved answers.

ISSB - PAF Officer Selection intelligence: Letter Coding MCQs — sample questions

  1. Question 1

    Q1. If CLOUD is coded as DMPVE, then RAIN is coded as:

    • A) SBJO
    • B) QZHM
    • C) SBKO
    • D) TCKP

    Answer: SBJO

    Explanation: Each letter +1: R→S, A→B, I→J, N→O. Pattern coding (+1 shift) is the most common ISSB coding rule.

  2. Question 2

    Q2. If ARMY → BSNZ, NAVY → ?

    • A) OBWZ
    • B) OBWA
    • C) MBUX
    • D) OBWX

    Answer: OBWZ

    Explanation: Each letter +1: N→O, A→B, V→W, Y→Z. Identify the relationship between the pair, then apply the same logic to the choices.

  3. Question 3

    Q3. If CAT = 3120, DOG = ? (A=1, B=2...)

    • A) 4157
    • B) 4156
    • C) 4158
    • D) 4159

    Answer: 4157

    Explanation: D=4, O=15, G=7 → 4157. Work each step carefully; ISSB math rewards accuracy under time pressure.

  4. Question 4

    Q4. If SOLDIER is coded as TPMEJFS, how is CADET coded?

    • A) DBEFU
    • B) DBEUF
    • C) CBEUF
    • D) DBFUE

    Answer: DBEFU

    Explanation: Each letter shifts +1: C to D, A to B, D to E, E to F, T to U.

  5. Question 5

    Q5. MUSIC written backwards letter by letter gives:

    • A) CISUM
    • B) CIUSM
    • C) MUSCI
    • D) SUMIC

    Answer: CISUM

    Explanation: Reverse order: C-I-S-U-M. Watch for letter order in intelligence sections. Identify the relationship between the pair, then apply the same logic to the choices.

  6. Question 6

    Q6. If P = 16, Q = 17, R = 18, then S = ?

    • A) 18
    • B) 19
    • C) 20
    • D) 21

    Answer: 19

    Explanation: Letters mapped to position in alphabet. S is 19th letter. Work each step carefully; ISSB math rewards accuracy under time pressure.

  7. Question 7

    Q7. MIRROR coded as ROMRIM. PAINT coded as?

    • A) TNIAP
    • B) TNIPA
    • C) IPANT
    • D) PNIAT

    Answer: TNIAP

    Explanation: Reverse the whole word letter by letter. PAINT reversed is TNIAP. Identify the relationship between the pair, then apply the same logic to the choices.

  8. Question 8

    Q8. If CAMP is coded as DBNQ, how is TENT coded?

    • A) UFOU
    • B) UFOS
    • C) SDMS
    • D) TFNU

    Answer: UFOU

    Explanation: Each letter moves one place forward: C to D, A to B, M to N, P to Q. So TENT becomes UFOU.

  9. Question 9

    Q9. If in a code, RANK is written as SBOL, how is FLAG written?

    • A) GMBH
    • B) GMBI
    • C) EMZH
    • D) GNAH

    Answer: GMBH

    Explanation: Each letter is moved one place forward: R to S, A to B, N to O, K to L. So FLAG becomes GMBH.

  10. Question 10

    Q10. If PAKISTAN is coded as QBLJTUBO, what is the coding rule?

    • A) Each letter moves one place forward
    • B) Each letter moves one place backward
    • C) Vowels are reversed only
    • D) Letters are written in reverse order

    Answer: Each letter moves one place forward

    Explanation: P becomes Q, A becomes B, K becomes L, and so on. Every letter is shifted one place forward in the alphabet.

  11. Question 11

    Q11. If in a code, ARMY is written as BSNZ, how is NAVY written?

    • A) OBWZ
    • B) OBXA
    • C) MBWX
    • D) NBWZ

    Answer: OBWZ

    Explanation: Each letter moves one step forward. N becomes O, A becomes B, V becomes W, Y becomes Z, so NAVY is OBWZ.

  12. Question 12

    Q12. If A=1, B=2, C=3 and so on, what is the code for DOG?

    • A) 4-15-7
    • B) 4-14-7
    • C) 3-15-7
    • D) 4-15-8

    Answer: 4-15-7

    Explanation: D is the 4th letter, O is the 15th, and G is the 7th. So DOG is 4-15-7.

  13. Question 13

    Q13. If in a code, LION is written as MJPO, how is TIGER written?

    • A) UJHFS
    • B) UJHFR
    • C) UJIFS
    • D) VIHFS

    Answer: UJHFS

    Explanation: Each letter moves one step forward. TIGER becomes UJHFS. Identify the relationship between the pair, then apply the same logic to the choices.

  14. Question 14

    Q14. If CAT = 24 and DOG = 26 using A=1, B=2, what is BAT?

    • A) 23
    • B) 24
    • C) 25
    • D) 26

    Answer: 23

    Explanation: B=2, A=1, T=20. Sum is 23. Work each step carefully; ISSB math rewards accuracy under time pressure.

  15. Question 15

    Q15. If in a code, FISH is GJTI, how is BIRD written?

    • A) CJSE
    • B) CJSD
    • C) BJSE
    • D) CKSE

    Answer: CJSE

    Explanation: Each letter moves one step forward. BIRD becomes CJSE. Identify the relationship between the pair, then apply the same logic to the choices.

  16. Question 16

    Q16. If P is coded as 16 and R as 18, what is S?

    • A) 18
    • B) 19
    • C) 20
    • D) 21

    Answer: 19

    Explanation: Letters are coded by position in the alphabet. S is the 19th letter.

  17. Question 17

    Q17. If MAP is NBQ, how is TOP written?

    • A) UPQ
    • B) TOQ
    • C) UOQ
    • D) TPQ

    Answer: UPQ

    Explanation: Each letter moves one step forward. TOP becomes UPQ. Identify the relationship between the pair, then apply the same logic to the choices.

  18. Question 18

    Q18. If A=1 and Z=26, what is CAB?

    • A) 6
    • B) 7
    • C) 8
    • D) 9

    Answer: 6

    Explanation: C=3, A=1, B=2. Sum is 6. Work each step carefully; ISSB math rewards accuracy under time pressure.

  19. Question 19

    Q19. If FISH is GJTI, BIRD is:

    • A) CJSE
    • B) CJSD
    • C) BJSE
    • D) CKSE

    Answer: CJSE

    Explanation: Each letter moves one step forward. BIRD becomes CJSE. Identify the relationship between the pair, then apply the same logic to the choices.

  20. Question 20

    Q20. If CAT is 24, DOG is:

    • A) 26
    • B) 25
    • C) 27
    • D) 28

    Answer: 26

    Explanation: C=3,A=1,T=20 sum 24. D=4,O=15,G=7 sum 26. Work each step carefully; ISSB math rewards accuracy under time pressure.

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