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13-01-2019
Mathematics

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How many different 3 digit numbers are there if. I digit can be repeated? The digits 0 through 9 can be used, but 0 cannot be in the first place.

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mathecoach mathecoach

13-01-2019

Answer:

9 digits for the first place.

10 digits for the second place.

10 digits for the third place.

9 * 10 * 10 = 900 Numbers

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