Mathematics
Write all possible 3-digit numbers that can be formed by the digits 9, 2 and 0, using each digit only once in each number.
Answer
When forming 3-digit numbers using the digits 9, 2, and 0, with each digit used only once, we must remember that a 3-digit number cannot start with 0.
If the hundreds digit is 9 : the remaining digits are 2 and 0.
Possible numbers: 920, 902
If the hundreds digit is 2 : the remaining digits are 9 and 0.
Possible numbers: 290, 209
Hence, the possible 3-digit numbers are 920, 902, 290, 209.
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