Mensa Mensa IQ Critical Thinking and Problem Solving 4 — Questions and Answers
Question 1: If all Bloops are Razzles, and all Razzles are Lazzles, which statement must be true?
- All Lazzles are Bloops
- All Bloops are Lazzles (Correct answer)
- No Lazzles are Bloops
- Some Razzles are not Lazzles
Correct answer: All Bloops are Lazzles
Transitive logic: Bloops→Razzles→Lazzles, so all Bloops are Lazzles.
Question 2: A clock shows 3:15. What is the angle between the hour and minute hands?
- 0°
- 7.5° (Correct answer)
- 15°
- 22.5°
Correct answer: 7.5°
At 3:15, the minute hand is at 90° and the hour hand is at 97.5°, giving a difference of 7.5°.
Question 3: Which number replaces the question mark? 2, 6, 12, 20, 30, ?
- 38
- 40
- 42 (Correct answer)
- 44
Correct answer: 42
The differences are 4, 6, 8, 10, 12, so the next term is 30 + 12 = 42.
Question 4: In a race, Anna finishes before Bob. Bob finishes before Cara. Dan finishes after Cara. Who finishes second?
- Anna
- Bob (Correct answer)
- Cara
- Dan
Correct answer: Bob
The order is Anna, Bob, Cara, Dan — so Bob finishes second.
Question 5: If you rearrange the letters 'CIFAITP' you get the name of a:
- Country
- City
- Ocean (Correct answer)
- Animal
Correct answer: Ocean
'CIFAITP' rearranged spells PACIFIC, which is an ocean.
Question 6: A farmer has 17 sheep. All but 9 die. How many sheep are left?
- 8
- 9 (Correct answer)
- 17
- 0
Correct answer: 9
'All but 9 die' means 9 survive — a classic misdirection problem.
Question 7: Which shape has the most lines of symmetry?
- Equilateral triangle
- Square
- Regular pentagon
- Circle (Correct answer)
Correct answer: Circle
A circle has infinite lines of symmetry, more than any polygon.
Mensa Mensa IQ Critical Thinking and Problem Solving 4
If all Bloops are Razzles, and all Razzles are Lazzles, which statement must be true?