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 ?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

There are two words one resembles the "state of rest" and the other is related to "writing/reading material".

Can you name these two words which also sound similar?

Why do you find that most of the buildings are deprived of the 13th floor?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

What does this Rebus Picture means ?

Solve the counting riddle by identifying the number of triangles in the given picture.