If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

What kind of band never plays music?

Why is a river so rich ?

Solve this riddle by finding the odd one out from the rest.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

What does it mean?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?