Codebusters Logical Puzzles and Riddles

Question 1

You have two ropes.
Each rope takes exactly one hour to burn, but they do not burn at a uniform rate.
For example, half the rope could burn in 1 minute, and the other half could take 59 minutes.
How can you measure 45 minutes using these two ropes?

Accepted Answer

Light one rope at both ends and the other at one end

Answer

Light both ropes at one end at the same time

Answer

Burn one rope halfway and the other fully

Answer

Light both ropes at both ends simultaneously

Question 2

I am an odd number. Take away one letter, and I become even. What number am I?

Accepted Answer

7

Answer

3

Answer

5

Answer

9

Question 3

If two’s company and three’s a crowd, what are four and five?

Accepted Answer

Nine

Answer

A party

Answer

A crowd

Answer

Fun

Question 4

A father and son are involved in a car accident. The father dies, and the son is rushed to the hospital. The surgeon sees the son and says, "I can't operate on him, he’s my son!" How is this possible?

Accepted Answer

The surgeon is his mother

Answer

The surgeon is a relative

Answer

The surgeon is a family friend

Answer

The surgeon is his uncle

Question 5

You have a barrel of water with a hole at the bottom. If you add water to the barrel at a constant rate, but water is leaking out of the hole at a constant rate, how much time does it take to fill the barrel?

Accepted Answer

The barrel will never fill

Answer

Zero

Answer

The same amount of time it would without the hole

Answer

Infinite time