A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

The Little ant seems to be always confused. Do you know why?

Why 1729 is a magic number? Answer Logically.

It belongs to you, but other people use it more than you do. What is it?

What goes through cities and fields, but never moves?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Spot 5 differences in two Christmas tree below:

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?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?