What do you answer even though it never asks you questions?

What is the next number in this series?

4,12,84,3612....

What has to be broken before you can use it?

What does man love more than life, and hate more than death or mortal strife; that which satisfied men want; the poor have, and the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

Whats the next number in the below number sequence pattern.

Buy me, smell me or deliver me, I do not change.

Who am I?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

Name a key which is hardest to turn.

The answer I give is yes, but what I mean is no. What was the question?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?