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?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

If six children and two dogs were under an umbrella, how come none of them got wet?

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

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Can you write down eight eights so that they add up to one thousand?

If two's company, and three's a crowd, then whats four and five ?

A man is approaching a broad and barren land. He has a package with him. If somehow, he is unable to open the package before reaching the land, he will die.

Can you guess what is present in the package?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?