Probability Question 32
Question: A bag contains 3 white and 7 red balls. If a ball is drawn at random, then what is the probability that the drawn ball is either white or red
Options:
A) 0
B) $ \frac{3}{10} $
C) $ \frac{7}{10} $
D) $ \frac{10}{10} $
Show Answer
Answer:
Correct Answer: D
Solution:
Required probability $ =\frac{{}^{3}C_1+{}^{7}C_1}{{}^{10}C_1}=\frac{10}{10} $ .
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