Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Teacher ask the student

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

what did student replied ?

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?

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

My thunder comes before lightning.
My lightning comes before my rain.
My rain dries up all the land it touches.

Who am I?

What number divided by 4 is the same as that number minus 4?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Why Aeroplane windows are round?

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?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?