Mensa Mensa IQ Critical Thinking and Problem Solving

Question 1

A bat and a ball cost $1.10 in total. The bat costs $1.00 more than the ball. How much does the ball cost?

Accepted Answer

$0.05

Answer

$0.10

Answer

$0.15

Answer

$0.20

Question 2

If it takes 5 machines 5 minutes to make 5 widgets, how long does it take 100 machines to make 100 widgets?

Accepted Answer

5 minutes

Answer

100 minutes

Answer

20 minutes

Answer

1 minute

Question 3

In a lake, a patch of lily pads doubles in size every day. If it takes 48 days for the patch to cover the entire lake, how long does it take to cover half the lake?

Accepted Answer

47 days

Answer

24 days

Answer

36 days

Answer

46 days

Question 4

A farmer has 17 sheep. All but 9 die. How many sheep are left?

Accepted Answer

9

Answer

8

Answer

17

Answer

0

Question 5

A house has four walls, each facing south. A bear walks by. What color is the bear?

Accepted Answer

White

Answer

Brown

Answer

Black

Answer

Gray

Question 6

Three boxes are mislabeled: one holds only apples, one holds only oranges, one holds both. You may pick one fruit from one box. From which box should you pick to correctly label all three?

Accepted Answer

The box labeled 'Both'

Answer

The box labeled 'Apples'

Answer

The box labeled 'Oranges'

Answer

Any box — you need at least two picks

Question 7

How many months of the year have 28 days?

Accepted Answer

12

Answer

1

Answer

2

Answer

4