Math, asked by rionbarua206, 1 year ago

How many 3-digit numbers are there between 99 and 1000(exclusive) having at least one of their digits 7?

Answers

Answered by ananyasingh142

5

Answer:

107, 117, 127, 137, 147, 157, 167, 177, 187, 197

now replace 1 with 2,3,4.....9

total numbers=90

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