During which month do people sleep the least?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

Can you move 2 matchsticks to form four equal sized squares.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How can a man go eight days without sleep?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Rectify the following equality 101 - 102 = 1 by moving just one digit.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?