What has no start, end, or centre?

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?

What is the fastest way to double your money?

Count the number of triangles in the given picture.

What can you catch but never throw?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

In the four images below, can you find the odd one out?

Who has married many women but was never married?

2, 3, 5, 9, 17, _ What is the next number in the sequence?