A bag contains 5 white, 6 black and 6 yellow balls. 3 balls are drawn at random. Find the probability that
a)all are black
b)exactly 2 yellow balls
Answers
Answer:
1
Step-by-step explanation:
1
2
will be correct answer not wrong
Given :
white ball = 5
Black ball = 6
Yellow ball = 6
To Find :
The probability that
a)all are black
b)exactly 2 yellow balls
Solution:
Total number of balls = 5+6+6= 17
The total number of ways of selecting 3 balls out of 17 balls is
a) The Probability that all are black:
Number of Black balls = 6
The probability that all are black =
The probability that all are black =
The probability that all are black =
b)The probability that exactly 2 yellow balls are drawn
Number of yellow balls = 6
Number of non-yellow balls = 11 ( 5 white,6 black)
The probability that exactly 2 yellow balls are drawn =
The probability that exactly 2 yellow balls are drawn =
The probability that exactly 2 yellow balls are drawn =
From the 3 balls drawn at random,
a)The probability that all are black is
b) The probability that exactly 2 yellow balls are drawn is