Math, asked by kaurrajpreet924, 17 hours ago

1. Form a two-digit number with repetition by using digit 7.

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Answers

Answered by gaminglinda271
2

Answer:

The first digit can be 7, 1 or 5. The second digit can also have three choices (originally 4, but because no digits can be repeated). So there are 3×3=9 2-digit numbers altogether.

They are

10,15,17,50,51,57,70,71,75

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