What is next number in the pattern below:

131 517 192 123 ?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What has no start, end, or centre?

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.

Move four matchsticks to the below square to form three squares?

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

I’m tall when I’m young, and I’m short when I’m old. What am I?