How many times do a clock's hands overlap in a day ?

Replace the question mark with the correct number in below Picture:

What has 13 hearts but no other organs?

What has to be broken before you can use it?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

Why do we preferably have round manhole covers and not square ones?

What does the below rebus riddle means?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.