It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

Solve the mathematical equation in the picture below.

What has hands, but can’t clap?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

How many triangles are there on the puzzle below?

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

Can you calculate the probability of getting a sum of six when a dice is thrown twice?