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

What has no start, end, or centre?

What will you call your mother's brother's brother-in-law?

Can you find out which options fits best with the missing column?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

You need to complete the maze by entering from the entrance marked below in the figure near the yellow circle, bottom left and leaving from the exit point near the green circle, bottom middle.

Rule of Game: You can move only by exchanging green and yellow circles.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

What's a single-digit number with no value?

Why do people go to bed?