# mat 157

posted by
**Susie**
.

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?

posted by
**Susie**
.

Suppose that a natural number from 1 through 9 is selected at random. What is the probabiliy that the number selected is odd if you know that it is prime?