John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

Make the seating arrangement of 10 children in such a way that there are 5 rows with 4 children in each row.

You see me once in June, twice in November, and not at all in May. What am I?

Can you name four days which start with the letter 'T'?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

What has a bottom at the top?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?