amnasiddiqui2007 amnasiddiqui2007

21-07-2020
Mathematics

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How many different 2-digit numbers are there with the following property: each of them has at least one digit 7?

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jbakkenso0001 jbakkenso0001

22-07-2021

Answer:

18 numbers

Step-by-step explanation:

These are all the two digit numbers with at least one 7.

17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 87, 97

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