How many sides does a circle have?

Teacher ask the student

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

what did student replied ?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

Find the 8 in the below-given Image.

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?