20+20+20=60. How can you make 60 again by using the same number 3 times, but it can’t be 20?
What three number result in the same answer whether they are added together or multiplied?
How many times can you subtract the number 5 from 25?
What time is it when the clock strikes 0?
How can you make 7 even?
How many seconds are there in one year?
Do you say, “Nine and five is thirteen,” or “Nine and five are thirteen”?
If 3 cats can kill 3 rats in 3 minutes, how long will it take 100 cats to kill 100 rats?
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?
Why are 1999 ten pound notes worth more than 1993 ten pound notes?