What building has the most stories?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

10+10 and 11+11 can give you the same answer.

Explain how?

I am sure no one can have two things for dinner. what are they?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

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

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?