Teacher ask the student

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

what did student replied ?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What is black when you buy it, red when you use it, and gray when you throw it away?

An evil man kidnapped someone and made them take one of two pills. One was harmless, but the other was poisonous. Whichever pill the victim took, the kidnapper took the other one. The victim took their pill with water and died. The kidnapper survived. How did the kidnapper get the harmless pill?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

what does the below rebus means?

What's the best place to go shopping in the ocean?