John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

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?

Why is a river so rich ?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

John was running from 40 thieves. John has got 3 gold boxes which weigh as 4kg, 2kg, and 1kg respectively. A witty man asked John to stay with him for seven days in exchange for 1kg gold per day. John needs to stay there for seven days and also do not want to give the witty man any advance. How can John pay for his seven days stay?