How can a man go eight days without sleep?

What does this rebus riddle means ?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

How many triangles can you find in this given picture?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

By moving just one matchstick, you need to make the below statement true. Can you do it?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?