They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Replace the question mark with the correct number, given the pair of numbers exhibits a similar relationship?

? : 3839 :: 11 : 1209

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

What demands an answer, but asks no questions

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?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Which digit occurred maximum times between the number 1 and 1000?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There is something which you can be arrested for attempting but not for successfully completing.