You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

Three brothers Jacob, John, and James live in Mexico City. The product of the ages of these brothers is 175. Jacob and John are twins. How old is James?

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Find out the number of circles in the given picture having Illusion

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

What does Alexander the Great and Winnie the Pooh have in common?

What Time Should the last watch show in the below figure?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

When 99 is considered higher than 100?