Replace the question mark with the correct number in below Picture:

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?

who is silent in the parliament?

What has one letter and starts with an E?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

What Adam and Eve do not have but the rest of the people have?

A man dies of old age on his 25 birthday. How is this possible?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

What is the last thing you take off before bed?

A mathematician couple was having a Frappuccino in Starbucks sitting opposite to each other. Suddenly the guy noticed the text written on the paper in front of them and exclaimed that it was wrong. The girl denied it and said it is appropriate. Both are correct. What is written on the paper?