What is the fastest way to double your money?

Why Wine Glass Stem is so long?

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?

what's the probability of getting a king or a queen from a pack of 52 cards?

A landlord calls both of his sons and tells them that their horses will now decide who will transfer the inheritance. He tells them to race along the land till the end and the one whose horse will be slower will win and be the heir to all the property.

Both of them keep wandering for days but to no result. Then they ask a wise man regarding it. The man advises them on the matter after which they jump on the horses and race as fast as they can till the end. Why did they do it?

What did the wise man say?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

Which is the smallest number that you can write using all the vowels exactly once?

A bomb exploded in a room full of married couples and no one died. How?

How many times do a clock's hands overlap in a day ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?