Answer to Question #115552 in Statistics and Probability for lolipop

Question

[img]https://upload.cc/i1/2020/05/09/rMhjRP.jpg[/img]

Answer 1

(a) P(Rocky picks a green card) = P( Rocky win) = 1/5  =0.2=20%

(b) total amount of cards N=40

if we choose some card, we have 9 cards with the same letter and 3 with the same number from the 39 other cards.

So the probability that we have cards with different letters and numbers: P=1-((3+9)/39)=0.6923=69.23 %