urgent please.

A transmitter send a random sequence of 1000 symbols per second drawn from an alphabet {AB} on a channel with a transition matrix: Q _ 0.4 0.2 _ 0.6 0.8 If the transmitted sequence contains 300 A's and 700 B's, and all symbols are received at the receiver without loss. Find: 0 How many A's and B's are received at the receiver per second? (8 points) 0 The mutual information between the transmitted and received sequences. (12 points)