What number when divided in half becomes zero?

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?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

It belongs to you, but other people use it more than you do. What is it?

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

What can you catch but never throw?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

What number should come in place of the question mark below?

Which is faster, Heat or Cold ? Explain.