You can see three almost identical images below. Can you spot the odd one out from them?

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

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

ST ND RD TH '?'

What is the fastest way to double your money?

An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Why is a river so rich ?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

A man is sitting in a bar when a rich man sits next to him. He turns to the rich man and says, “Did you know I know almost every song that has ever existed?”

The rich man laughs. The man then says, “I bet you all the money you have in your wallet that I can sing a genuine song with a lady’s name of your choice in it. The rich man laughs again and says, “OK, how about my daughter’s name, Jamie Armstrong-Miller?” Minutes later, the man collects his cash and the rich man goes home cashless. What song did the man sing?

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

I am quite hot but become too cold if you remove the first two letters. What am I?