What does below rebus means ?

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

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How many triangles are there on the puzzle below?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?