Mensa IQ Test Mensa IQ Coding and Decoding 7

Question 1

In a code, ABCDE=12345 and FGHIJ=67890. What is the code for BADGE?

Accepted Answer

21475

Answer

24175

Answer

21435

Answer

21476

Question 2

A substitution: every letter is replaced by the one 4 places ahead (wrapping Z→D). What does VWXY decode to?

Accepted Answer

RSTU

Answer

STUV

Answer

QRST

Answer

RSVW

Question 3

If JANUARY = J-A-N-U-A-R-Y and is coded by its month number (1), what month number codes JUNE?

Accepted Answer

6

Answer

5

Answer

7

Answer

4

Question 4

A code doubles each digit: 123 → 246. What does 369 decode to in the original?

Accepted Answer

184.5

Answer

184

Answer

185

Answer

183

Question 5

STOP is coded as UVPR: S+1→no wait… S→U(+2), T→V(+2), O→P(+1), P→R(+2). Actually S+2=U, T+2=V, O+1=P, P+2=R. Which is the most consistent rule?

Accepted Answer

Alternating +2 and +1 shifts

Answer

Each letter shifts +2 (O wraps oddly)

Answer

Random per-letter shifts

Answer

Mirror alphabet

Question 6

In a grid code, a 5×5 grid assigns coordinates: A=(1,1), B=(1,2)… F=(2,1)… Z=(5,5). What are the coordinates of 'M'?

Accepted Answer

(3,2)

Answer

(2,3)

Answer

(3,3)

Answer

(2,2)

Question 7

A code: 'TIN' = 54-27-42 using the rule (position × 3 × 6) mod 100. T=20×18=360 mod 100=60? Let's use T(20)×3=60, I(9)×3=27, N(14)×3=42 — so the rule is position×3. What is 'SUN' coded as?

Accepted Answer

57-63-42

Answer

57-63-41

Answer

56-63-42

Answer

57-62-42