How can a man go eight days without sleep?

Can you find the company name in the pictogram below?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Which Travels Faster? Solve below famous picture riddle:

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Find out the number of circles in the given picture having Illusion

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!!!