What word begins and ends with an E, but has only one letter?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

How many times can you subtract the number two from the number fifty?

Which point will the car reach to go out?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

Seven Robbers robbed a bank and hide the coins in a lonely place.
They decide to divide the money equally the next morning. Two greedy robbers decided to cheat the others and reach the place at night. They equally divided the coins between them, one coin left. So they called another robber and then they decided to divide equally among the three. Sadly again one coin left. The same thing happened to the 4th 5th and the 6th robber.
However, when the 7th robber reached in the morning, they can divide the coins equally.

How many coins were there in total?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?