Question 13

1. A fair coin is tossed 6 times. Calculate the probability of obtaining at most three heads.



2. A pool of jurors consists of 1 British, 3 Americans and 2 Africans. If 2 jurors are selected one after the other, to sit on jury for a trial at a time, find the probability that they are:

   1. 1 American and 1 African;
   
   
   2. Of different nationalities.