Question

The odds of winning a game at a carnival are 3 in 7. If Angie plays the game nine times, what is the probability that she wins exactly two times

Answer 1

13%

Explanation:

C(n, x) •
`p^(x)` •
`q^(n-x)`

x = number of successes = 2

p = probability of success = 3/7

q = probability of failure = 1 = 3/7

n = number of games

(3/7)^2 x (4/7)^(9-2) = 13%