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Find the numbers between 100 and 1000 in which all digits are distinct?

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Find the numbers between 100 and 1000 in which all digits are distinct?
posted May 10, 2018 by Mishthy Mukherjee

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1 Answer

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The hundreds place cannot be 0 so we have 9 possible numbers fit there.
The tens place has 9 options and the units place has 8 options. So there are 9×9×8 = 648 numbers between 100 and 1000 that have distinct digits in them.

answer May 11, 2018 by Tejas Naik



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