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 ?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

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

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

Next Number in the Series,

5, 16, 49, 104, ?

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

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Which is the correct shadow of the bird?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?