Can you find the key in the picture below?

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

What begins with T, ends with T, and has T in it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Can you move 2 matchsticks to form four equal sized squares.

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

What has no start, end, or centre?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

What word begins and ends with an E, but has only one letter?

What kind of band never plays music?