TS EAMCET · Maths · Probability
A bag contains 5 black balls, 4 white balls and 3 red balls. If a ball is selected at random, the probability that it is a black or a red ball, is
- A \(\frac{1}{3}\)
- B \(\frac{1}{4}\)
- C \(\frac{5}{12}\)
- D \(\frac{2}{3}\)
Answer & Solution
Correct Answer
(D) \(\frac{2}{3}\)
Step-by-step Solution
Detailed explanation
Required probability \[ =\frac{5 C_1+3 C_1}{12 C_1}=\frac{5+3}{12}=\frac{8}{12}=\frac{2}{3} \]
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