Probability Question 55
Question: A bag contains 6 red, 5 white and 4 black balls. Two balls are drawn. The probability that none of them is red, is
[AI CBSE 1983]
Options:
A) $ \frac{12}{35} $
B) $ \frac{6}{35} $
C) $ \frac{4}{35} $
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
Required probability $ =\frac{{}^{9}C_2}{{}^{15}C_2}=\frac{9\times 8}{15\times 14}=\frac{12}{35}. $
BETA
