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 ?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

Can you count the number of children in the picture below

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

With the help clues provided in the image, can you find the 5 digit key?

I have Rs.50 and I spend it in the way as below.

What country can make you shiver?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?