Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What 5-letter word typed in all capital letters can be read the same upside down?

What always comes into a house through the keyhole?

What is the difference between a jeweller and a jailer?

Who are the happiest people in IPL match?

A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.

How did the man in the booth know to give him two tickets without even looking at him?

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

What am I?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?