I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?

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

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

John needs to purchase 100 chocolates from three different shops and he has exactly 100 rupees to do that which he must spend entirely. He must buy at least 1 Chocolate from each shop.

The first shop is selling each chocolate at 5 paise, the second is selling at 1 rupee and the third is selling at 5 rupees.

How many chocolates should he buy from each shop?

What occurs twice in a week, once in a year but never in a day?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?