Mensa IQ Test Mensa IQ Coding and Decoding 2

Question 1

In a word code, TRAIN is written as USBJM. What is PLANE in this code?

Accepted Answer

QMBOF

Answer

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'?

Accepted Answer

54

Answer

'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?

Accepted Answer

AIOE

Answer

☀=A, ★=I, ♦=O, ☾=E → AIOE.

Question 4

If MANGO = 13-1-14-7-15, what is the code for GRAPE?

Accepted Answer

7-18-1-16-5

Answer

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?

Accepted Answer

HOLD

Answer

S(19)↔H(8), L(12)↔O(15), O(15)↔L(12), W(23)↔D(4) → HOLD.

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Mensa IQ Test Mensa IQ Coding and Decoding 2