What is the next number in the series?

15 29 56 108 208 ?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

If an electric train is travelling south, then which way is the smoke going?

Can you write down eight eights so that they add up to one thousand?

Find the next number in the series below

21 32 54 87 131 ?

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.

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?

What can you catch but never throw?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.