How many number are there in 3 digit?

Answer 1

Working out the combination of numbersThe number of three-digit integersAssumptions:

• You are using the numbers 0-9 (10 combinations each)
• You can use any number more than once
• You include leading zeros, ie. 001, 002
• '000' is a possible combination

There are exactly 1000 possible ways if all assumptions are true, and 900 if numbers under 100 do not count.

How to work it outMultiply the possible combinations so that it will be 10*10*10 or 103 (three times because there are three slots)