## How long will it take 100 cats to kill 100 rats

If 3 cats can kill 3 rats in 3 minutes, how long will it take 100 cats to kill 100 rats? Check the answer here.

There is a three digit number. The second digit is four times as big as the third digit, while the first digit is three less than the second digit. What is the number? Check the answer here.

Why are 1999 ten pound notes worth more than 1993 ten pound notes? Check the answer here.

Take a good look at your hands. You have 10 fingers on your hands. How many fingers are there on 10 hands? Check the answer here.

What number do you get when you multiply all of the numbers on a telephone’s number pad? Check the answer here.