Suppose 2 distinct integers are chosen from 1 through 9, inclusive. What is the probability that they are both multiples of 3?

Guest Nov 8, 2020

#2**0 **

*Suppose 2 distinct integers are chosen from 1 through 9, inclusive. What is the probability that they are both multiples of 3?*

The multiples of 3 are 3, 6, and 9.

The probability of choosing one of the three of them is 3/9.

Then, the probability of choosing one of the other two is 2/8.

3 2 6 **1**

The probability of both things happening is –— x –— = –— = **–—**

9 8 72 **12**

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Guest Nov 8, 2020