Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

There is an ancient kingdom where every married woman keeps information regarding the fidelity of other men. However, what they don't know is the fidelity of their own husbands. Also, there is an ancient belief that they don't tell each other about the fidelity of their husbands.

On a certain day, the queen of the kingdom declares that she has identified at least one unfaithful man in the kingdom. She allows the wives to identify and gives them authority to kill their husbands if they are unfaithful at midnight.

How will the wives manage it?

Buy me, smell me or deliver me, I do not change.

Who am I?

Can you count the number of triangles in the picture below?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Prove that twice of ten is the same as twice of eleven.