Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

What is next number in the pattern below:

131 517 192 123 ?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Can you write down eight eights so that they add up to one thousand?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).