There are 15 cards, numbered 1 through 15. If you pick a card, what is the probability that you choose an odd number or a two?
We want the P(odd) or P(2).
P(odd) = 1, 3, 5, 7, 9, 11, 13, 15 = 8/15
P(2) = 1/15
Add them both:
8/15 + 1/15 = 9/15
Simplified, we get 3/5.
We want the P(odd) or P(2).
P(odd) = 1, 3, 5, 7, 9, 11, 13, 15 = 8/15
P(2) = 1/15
Add them both:
8/15 + 1/15 = 9/15
Simplified, we get 3/5.