you can only use the digits {3,4,5,6,7,8,9} Q: how many ways can you get a 4...

Question

Question

you can only use the digits {3,4,5,6,7,8,9}

Q: how many ways can you get a 4 digit number that is less than 7000?

Answer 1

Answer #1

digits arculable:83,4,5, 6,7,8,9}コチ The number must be means, a ist place, we have sm For each of remaining places, we . T

Answer 2

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