Mensa Mensa IQ Spatial and Abstract Reasoning Questions and Answers 4 — Questions and Answers
Question 1: Find the missing number: 3, 9, 7, 13, 11, 17, 15, ?
- 19
- 21 (Correct answer)
- 18
- 23
Correct answer: 21
The sequence alternates +6 and −2: 15 + 6 = 21.
Question 2: If you look at a transparent clock from behind, what time does it display if the clock face shows 2:30?
- 9:30 (Correct answer)
- 9:30
- 8:30
- 10:30
Correct answer: 9:30
Mirroring a clock horizontally maps 2 to 10; the reflected time is 9:30.
Question 3: A grid has rows labeled 1–4 (top to bottom) and columns A–D (left to right). A pattern of shaded cells appears at (1,A), (2,B), (3,C). Which cell logically continues the diagonal?
- (4,A)
- (4,D) (Correct answer)
- (3,D)
- (4,B)
Correct answer: (4,D)
The diagonal moves one row down and one column right each step, landing at row 4, column D.
Question 4: How many triangles are in a figure of a large triangle divided by lines connecting midpoints of each side?
- 3
- 4 (Correct answer)
- 5
- 6
Correct answer: 4
Connecting midpoints creates 4 congruent triangles inside the original.
Question 5: Which of these letter codes follows the same transformation rule? AB → YZ, CD → WX, then EF → ?
- MN
- UV (Correct answer)
- TU
- ST
Correct answer: UV
Each pair is mapped to its mirror pair from the end of the alphabet: EF maps to UV.
Question 6: A water tank is 1/3 full. After adding 20 liters, it is 1/2 full. What is the total capacity of the tank?
- 60 L
- 120 L (Correct answer)
- 90 L
- 100 L
Correct answer: 120 L
The difference (1/2 − 1/3) = 1/6 of capacity equals 20 L, so total capacity = 120 L.
Question 7: What comes next in the spatial rotation sequence: shape rotated 45°, 90°, 135°, 180°, ?
- 200°
- 225° (Correct answer)
- 215°
- 270°
Correct answer: 225°
The sequence increases by 45° each step: 180° + 45° = 225°.
Mensa Mensa IQ Spatial and Abstract Reasoning Questions and Answers 4
Find the missing number: 3, 9, 7, 13, 11, 17, 15, ?