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?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

Why do we preferably have round manhole covers and not square ones?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What part of Turkey has the most feathers?

Replace the question mark in the picture below.

Find the next number in the series.
1 10 24 43 67 ?

I know a nine-letter word having only one vowel.
Do you ?