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

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

O_er_t_o_

Complete the missing letters of the given word.

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

What you cannot hold but it is yours?

What demands an answer, but asks no questions

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

The dirtier I get, the whiter I look. Who am I?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

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?