JEE Mains · Maths · STD 11 - 14. probability
If three letters can be posted to any one of the \(5\) different addresses, then the probability that the three letters are posted to exactly two addresses is :
- A \(\frac{12}{25}\)
- B \(\frac{18}{25}\)
- C \(\frac{4}{25}\)
- D \(\frac{6}{25}\)
Answer & Solution
Correct Answer
(A) \(\frac{12}{25}\)
Step-by-step Solution
Detailed explanation
Total method \(=5^3 \) faverable \(={ }^5 \mathrm{C}_2\left(2^3-2\right)=60 \) probability \(=\frac{60}{125}=\frac{12}{25}\)
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