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 ?

Analyze and find the missing item in the sequence:
16, 06, 68, 88, __, 98

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

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

What is at the end of a rainbow?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Which English verb becomes past tense just by rearranging the letters?

How can you make a TV, a bed, a dog, and a car liquid?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?