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?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Find the value of "?" in the ball picture Riddle below:

What kind of band never plays music?

Replace the question mark with the correct number.

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

How many times can you subtract the number 5 from 25?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.