I have eight fingers and two thumbs but I do not live. What Am I?

Count the number of lines in the image below ?

What brings you down but never up?

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

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Where do fish keep their money?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

What does does this rebus picture means ?

Which number comes next in the number series?

2, 9, 30, 93, ?