Cognitive Reflection Test Verbal and Logic Puzzles 2

Question 1

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

Accepted Answer

5 minutes

Answer

Each machine makes one widget in 5 minutes, so 100 machines make 100 widgets in the same 5 minutes.

Question 2

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

The ball is $0.05 and the bat is $1.05, a difference of exactly $1.00.

Question 3

A lily pad patch doubles in size each day and covers the whole lake on day 48. On what day was the lake half covered?

Accepted Answer

Day 47

Answer

Since it doubles daily, the day before full coverage it was exactly half covered.

Question 4

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

Accepted Answer

9

Answer

"All but 9" means 9 sheep survive.

Question 5

If you overtake the person in second place in a race, what position are you in?

Accepted Answer

Second

Answer

Passing the runner in second place means you take over their spot, not first.

Cognitive Reflection Test Practice Test