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

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

A man dies of old age on his 25 birthday. How is this possible?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

What does this rebus picture identify?

Why is the longest human nose just 11 inches?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

What does a man do only once in his lifetime, but women do once a year after they are 29?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?