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

What is full of holes but still holds water?

I can write cow in 13 letters.

Can You?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

You are on your way to visit your Friend, who lives at the end of the hill. It is his birthday, and you want to give him the cakes you have made. Between your house and his house, you have to cross 5 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake. How many cakes do you have to leave home to make sure that you arrive at a friend's house with exactly two

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?