13.How many 3 digit numbers are there in all?
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Answer:
Nice I really don't know
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Step-by-step explanation:
In the tens place and the one's place, there can be any digit from 0-9. There is a possibility of 10 digits in the hundredth place and 10 digits in the unit's place. Thus, there are 9 × 10 × 10 = 900 three-digit numbers in all. Therefore there are 900 three-digit numbers in all.
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