Mensa IQ Test Mensa IQ Coding and Decoding 1

Question 1

In a certain code, BRIDGE is written as EULGJH. What is the rule being applied?

Accepted Answer

Each letter is shifted forward by 3

Answer

B+3=E, R+3=U, I+3=L, D+3=G, G+3=J, E+3=H — each letter advances 3 positions.

Question 2

If MOUSE = 13-15-21-19-5, what does 6-15-24 decode to?

Accepted Answer

FOX

Answer

Each number is the position of the letter in the alphabet: F=6, O=15, X=24.

Question 3

In a code, CAT → DCV and DOG → EPH. Which word encodes to GQX?

Accepted Answer

FQW

Answer

Each letter is shifted +1: C→D, A→B (but shown as C), so first letter +1, second letter+2, third letter+1 — actually C+1=D, A+2=C, T+2=V; D+1=E, O+1=P, G+1=H. Re-examining: CAT→DCV (C+1, A+2, T+2) and DOG→EPH (D+1, O+1, G+1). The pattern for G→H, P→Q, W→X decodes as FPW encoded.

Question 4

If ★=1, ■=2, ▲=3, ●=4, what is the value of ▲★■●?

Accepted Answer

3124

Answer

▲=3, ★=1, ■=2, ●=4, so the sequence reads 3-1-2-4.

Question 5

COLD is coded as FROG. Using the same rule, how is HEAT coded?

Accepted Answer

KHDW

Answer

C+3=F, O+3=R, L+3=O, D+3=G — shifting each letter by +3: H+3=K, E+3=H, A+3=D, T+3=W.

Mensa Practice Test Practice Test

Mensa Practice Test Practice Test

Mensa IQ Test Mensa IQ Coding and Decoding 1