A bag contains 4 white, 5 red and 6 blue balls. Three balls are drawn at random from the bag. The probability that all of them are red, is:
A) 2/91
B) 1/22
C) 3/22
D) 2/77
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Answer:
(A)2/91
Step-by-step explanation:
total no. of balls=15
no. of possibilities of drawing three balls=15c3
no. of possibilities for drawing three red balls=5c3
p(drawing three red balls)=5c3/15c3
=2/91
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