Question

Probability:
How many ways are there to write a 3 digit positive integer using the digits 1, 3, 5,7, and 9 if no digit is used more than once?

Answer 1

25

Answer 2

There are 5 digits, and if none can be repeated then the first digit can be chosen in 5 ways, the second can be chosen in 4 ways and the third in 3.

5 x 4 x 3 = 60.

Answer 3

That makes sense! thanks again lol

Answer 4

My Pleasure.