How many 4-digit numbers can be formed using only the digits 9, 8 and 7? :p

asked Jul 8, 2021 17.4k views

4 votes

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3 votes

Answer: 81

Explanation:

First digit and Second digit and Third digit and Fourth digit

3 choices x 3 choices x 3 choices x 3 choices = 81

BRAHIM Kamel answered Jul 12, 2021

8.0k points

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