If it took eight men ten hours to build a wall, how long would it take four men to build it?

Teacher ask the student

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

what did student replied ?

What has no start, end, or centre?

Which is faster, Heat or Cold ? Explain.

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

PS: You may start the number from 0.

When it's bad luck to meet a black cat?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

I can write cow in 13 letters.

Can You?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.