Probability Question 417
Question: A box contains 10 red balls and 15 green balls. If two balls are drawn in succession then the probability that one is red and other is green, is
Options:
A) $ \frac{1}{3} $
B) $ \frac{1}{2} $
C) $ \frac{1}{4} $
D) None of these
Correct Answer: B
Show Answer
Answer:
Solution:
Required probability $ =\frac{(10\,.\,15)}{{}^{25}C_2}=( \frac{2\,.\,10\,.\,15}{25\,.\,24} )=\frac{1}{2}. $
BETA
