SOLUTION: 5. How many numbers may be formed by using 4 out of the 5 digits 1,2,3,4,5 (a) if the digits must not be repeated in any number, (b) if they may be repeated? If the digits must

Algebra ->  Test -> SOLUTION: 5. How many numbers may be formed by using 4 out of the 5 digits 1,2,3,4,5 (a) if the digits must not be repeated in any number, (b) if they may be repeated? If the digits must       Log On


   



Question 1191178: 5. How many numbers may be formed by using 4 out of the 5 digits 1,2,3,4,5
(a) if the digits must not be repeated in any number,
(b) if they may be repeated? If the digits must not be repeated, how many of the 4-digit numbers
Show full solution, thank you!

Answer by Solver92311(821) About Me  (Show Source):
You can put this solution on YOUR website!


(a)

(b)

You can do your own arithmetic.

John

My calculator said it, I believe it, that settles it

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