Question

What is the probability of ‘M’ in the word ‘communication .’​

Answer 1

We will select M places out of N channels and permute all M telegrams in these places

Hence total number of ways =(

N

M

)×M!

And total number of ways of distribution =Each telegram having N options =N

M

Hence probability P=

N

M

(

N

M

)×M!