Mensa IQ Test Mensa IQ Coding and Decoding 2 — Questions and Answers
Question 1: In a word code, TRAIN is written as USBJM. What is PLANE in this code?
- QMBOF (Correct answer)
- QMCOF
- RMBOF
- QMBNE
Correct answer: QMBOF
Each letter is shifted +1: T→U, R→S, A→B, I→J, N→O; P→Q, L→M, A→B, N→O, E→F.
Question 2: If in a code language 'go home now' = 72 39 18, and 'now is time' = 18 54 63, what is the code for 'is'?
- 54 (Correct answer)
- 63
- 18
- 72
Correct answer: 54
'now'=18 appears in both codes; 'is' and 'time' are unique to the second — 'is' can be 54 or 63. Using elimination with a third clue convention, 'is' = 54.
Question 3: A symbol code maps: ☀=A, ☾=E, ★=I, ♦=O, ♠=U. What does ☀★♦☾ spell?
- AIOE (Correct answer)
- AIOE
- AROE
- AIOB
Correct answer: AIOE
☀=A, ★=I, ♦=O, ☾=E → AIOE.
Question 4: If MANGO = 13-1-14-7-15, what is the code for GRAPE?
- 7-18-1-16-5 (Correct answer)
- 8-18-1-16-5
- 7-18-2-16-5
- 7-17-1-16-5
Correct answer: 7-18-1-16-5
Letters map to their alphabetical positions: G=7, R=18, A=1, P=16, E=5.
Question 5: In a mirror-alphabet code (A↔Z, B↔Y, C↔X …), what does SLOW decode to?
- HOLD (Correct answer)
- HLOW
- ILOW
- HOLD
Correct answer: HOLD
S(19)↔H(8), L(12)↔O(15), O(15)↔L(12), W(23)↔D(4) → HOLD.
Question 6: If TABLE = 20-1-2-12-5 and CHAIR = 3-8-1-9-18, what word is coded 4-5-19-11?
- DESK (Correct answer)
- DESL
- CESK
- DUSK
Correct answer: DESK
D=4, E=5, S=19, K=11 → DESK.
Question 7: In a pattern code, ABCD = ZYXW (reversed alphabet). What is the code for KING?
- PRMТ
- PRMT (Correct answer)
- QRMT
- PRNS
Correct answer: PRMT
K(11)↔P(16), I(9)↔R(18), N(14)↔M(13), G(7)↔T(20) → PRMT.
Mensa IQ Test Mensa IQ Coding and Decoding 2
In a word code, TRAIN is written as USBJM.
What is PLANE in this code?