How should i approach this? "each pick their favorite one-digit positive integer."

How should i approach this? "each pick their favorite one-digit positive integer."

Abigail, Brian, and Chris each pick their favorite one-digit positive integer.What is the probability they pick three different numbers?

Not sure even where to start.

they each can pick from 1-9

rakrak1998 said:

Abigail, Brian, and Chris each pick their favorite one-digit positive integer.What is the probability they pick three different numbers?

Not sure even where to start.

they each can pick from 1-9

Click to expand...

How many one-digit positive integers are there?

The first picker can pick any of those (9) numbers.

The second picker has one less number (8) to choose from and

The third picker has two less numbers (7) to choose from .....

Continue....