What is the riddle which can be asked all day with a different correct answer each time.

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Find the missing letter in the last circle logically in the given below picture.

When 99 is considered higher than 100?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

If eleven plus two equals one, what does nine plus five equal?