Find the next number in the series below

21 32 54 87 131 ?

During which month do people sleep the least?

A very interesting trivia question for all.

Why do men's shirts have their buttons on the right side and women's have buttons on the left-hand side?

When is the top of a mountain similar to a savings account?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

They are three errirs in this question. Can you find them?

You need to move three matchsticks to form three squares. Can you do it?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

What is the next shape from answers A, B, C, and D figure?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?