Mensa Mensa IQ Deductive Reasoning Puzzles Questions and Answers 5

Question 1

In a family: Alice is Bob's sister. Bob is Carol's son. Dave is Carol's husband. What is Alice's relationship to Dave?

Accepted Answer

Daughter

Answer

Carol is Alice's mother (since Bob is Carol's son and Alice is Bob's sister), and Dave is Carol's husband, making Dave Alice's father and Alice his daughter.

Question 2

The statement 'If it is a square, then it is a rectangle' is true. Which of the following is an equivalent statement?

Accepted Answer

If it is not a rectangle, then it is not a square

Answer

The contrapositive 'If not a rectangle, then not a square' is logically equivalent to the original statement.

Question 3

Six people sit in a row: P, Q, R, S, T, U. P sits next to Q. R sits at one end. T sits next to U but not next to P. S is between R and Q. Which person sits at the other end?

Accepted Answer

T

Answer

R is at one end, S is next to R, Q is next to S, P is next to Q, and T-U fill the remaining two seats with T at the far end.

Question 4

What number should replace the question mark? 3, 9, 27, 81, ?

Accepted Answer

243

Answer

Each term is multiplied by 3, so 81 × 3 = 243.

Question 5

No reptiles are warm-blooded. All snakes are reptiles. Therefore:

Accepted Answer

No snakes are warm-blooded

Answer

Since all snakes are reptiles and no reptiles are warm-blooded, no snakes can be warm-blooded.

Mensa Practice Test

Mensa Practice Test

Mensa Mensa IQ Deductive Reasoning Puzzles Questions and Answers 5