TS EAMCET · Maths · Probability
A bag contains 6 white and 4 black balls. Two balls are drawn at random. The probability that they are of the same colour, is
- A \(1 / 15\)
- B \(2 / 5\)
- C \(4 / 15\)
- D \(7 / 15\)
Answer & Solution
Correct Answer
(D) \(7 / 15\)
Step-by-step Solution
Detailed explanation
The number of ways to select 2 balls out of 10 \(={ }^{10} C_2\) Number of ways to select 2 balls both white \(={ }^6 C_2\). Number of ways to select 2 balls both black \(={ }^4 C_2\) \(\therefore\) The required probability…
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