John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What Time Should the last watch show in the below figure?

I look at you, you look at me, I raise my right, you raise your left. What am I?

You can hear me, but you can't touch or see me.

What am I?

How can you make number one disappear by adding something to it?

If I put in one canary per cage, I have one bird too many. If I put in two canaries per cage, I have one cage too many. How many cages and canaries do I have?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

The barber of Town shaves all men living in the town. No man living in the town is allowed to shave himself. The barber lives in that town. Who then shaves the barber of the town?