If it took eight men ten hours to build a wall, how long would it take four men to build it?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

What do you think with the below Picture ?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Can you count the number of blocks in the picture below?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?