Sasha wrote each of the numbers 21 through 40 on a different index card. She will randomly pick one card. A is the event of picking a number that is divisible by 3. B is the event of picking a prime number.

Step-by-step explanation:

Given

-- Divisible by 3

--- Prime numbers

Required

This is calculated as:

Using probability formula, we have:

Where:

So:

36/60

36/2=18

60/2=30

18/30

18/3=6

30/3=10

6/10

6/2=3

10/2=5

your final answer would be 3/5 of an

hope this !

6.5

step-by-step explanation:

you said it was in the question

~courtney