How many three digit numbers are there in all

Asked by admin @ 16/08/2021 in Math viewed by 345 People

How many three digit numbers are there in which all digits are same?
Please answer

Answered by admin @ 16/08/2021

Step-by-step explanation:

The third digit can be any digit (10 possibilities) but cannot be equal to the first two digits. Therefore, there are (10-2) 8 possibilities for the 3rd digit. So there are 9 * 9 * 8 = 648 possibilities

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