How many times can you subtract five from twenty-five?
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?
20+20+20=60. How can you make 60 again by using the same number 3 times, but it can’t be 20?
Use the number 5 three times, 55+5=60