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:

Question

Aicharya · Accepted Answer

$\begin{aligned} & 	ext { Total method }=5^3 \ & 	ext { faverable }={ }^5 \mathrm{C}_2\left(2^3-2ight)=60 \ & 	ext { probability }=\frac{60}{125}=\frac{12}{25}\end{aligned}$

If three letters can be posted to any one of the 5 different addresses, then the probability that the three…

Solution