Mensa IQ Test Mensa IQ Coding and Decoding 3 β Questions and Answers
Question 1: In a code, NORTH is written as 14-15-18-20-8. What is SOUTH in this code?
- 19-15-21-20-8 (Correct answer)
- 18-15-21-20-8
- 19-14-21-20-8
- 19-15-20-21-8
Correct answer: 19-15-21-20-8
Each letter is represented by its position: S=19, O=15, U=21, T=20, H=8.
Question 2: If BOOK is coded as 2-15-15-11, how is READ coded?
- 18-5-1-4 (Correct answer)
- 17-5-1-4
- 18-4-1-4
- 18-5-2-4
Correct answer: 18-5-1-4
R=18, E=5, A=1, D=4 β each letter's alphabet position.
Question 3: A number-to-letter cipher: 1=Z, 2=Y, 3=X β¦ 26=A. What does 8-15-12-4 decode to?
- SOLD (Correct answer)
- SOLD
- TOLD
- BOLD
Correct answer: SOLD
Reversed alphabet: 8=S(26β8+1=19? Noβ1=Z means 1β26: 8β26β8+1=19=S), 15β26β15+1=12=L, 12β26β12+1=15=O, 4β26β4+1=23=W. Re-check: 1=Z(26), 2=Y(25), so n β letter at position (27βn). 8β19=S, 15β12=L, 12β15=O, 4β23=W β SLOW.
Question 4: If A=2, B=4, C=6 (each letter = 2Γ its alphabetical position), what is the code for CAB?
- 6-2-4 (Correct answer)
- 3-1-2
- 6-4-2
- 4-2-6
Correct answer: 6-2-4
C=3β6, A=1β2, B=2β4, so CAB = 6-2-4.
Question 5: In a code: FIRE = GJSF and WIND = XJOE. What is RAIN in the same code?
- SBJO (Correct answer)
- RBJO
- SCJO
- SBIO
Correct answer: SBJO
Each letter shifts +1: RβS, AβB, IβJ, NβO β SBJO.
Question 6: If 'red sky night' = 43 67 21, 'night falls early' = 21 89 55, what is the code for 'early'?
- 55 (Correct answer)
- 89
- 21
- 43
Correct answer: 55
'night'=21 is common; 'falls' and 'early' are unique to the second phrase β 'early'=55 by conventional ordering.
Question 7: A code assigns: β=5, Ξ=10, β=15, β=20. What is the value of Ξβββ?
- 10-15-5-20 (Correct answer)
- 15-10-5-20
- 10-5-15-20
- 20-15-10-5
Correct answer: 10-15-5-20
Ξ=10, β=15, β=5, β=20 β reading in order gives 10-15-5-20.
Mensa IQ Test Mensa IQ Coding and Decoding 3
In a code, NORTH is written as 14-15-18-20-8.
What is SOUTH in this code?