Find the next number in the series below

21 32 54 87 131 ?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Who can jump higher than a Mountain?

Count the number of triangles in the below picture?

What is at the end of a rainbow?

Which digit occurred maximum times between the number 1 and 1000?