SOLUTION: how many 3 digit numbers >300 can be formed with the digits 1,2,3,4,5,6 if no digit is repeated in any number?
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Permutations
-> SOLUTION: how many 3 digit numbers >300 can be formed with the digits 1,2,3,4,5,6 if no digit is repeated in any number?
Log On
Since the number has to be greater than 3 hundred, the first digit must be selected from 3, 4, 5, or 6. So 4 ways to choose the hundreds digit. For each of those four ways to select the hundreds digit there are 5 ways to select the tens digit, the six numbers 1 through 6 less the digit used for the hundreds digit. Then there are four ways to chose the ones digit.
So .
You can do your own arithmetic.
John
My calculator said it, I believe it, that settles it
