Which is the smallest number that you can write using all the vowels exactly once?

What Does this text mean:

important=important

I have no life, but I can die. What am I?

What demands an answer, but asks no questions

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What can you catch but never throw?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

I have branches, but no fruit, trunk or leaves. What am I?