Why Wine Glass Stem is so long?

What is the next number in this series?

4,12,84,3612....

Where do fish keep their money?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

If two's company, and three's a crowd, then whats four and five ?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

what does the below rebus mean?

Which alphabet is a part of our body?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?