The expectation is that letters posted with TCS will be delivered the next day. Records show that on

average 4.8% of letters are delivered late. On a particular day there are 150 letters, find the

probability that:

A. no more than 10 letters will be delivered late;

B. exactly 8 letters will be delivered late;

C. at least 6 but no more than 12 letters will be delivered late.