5. Three coins are tossed. Describe
(i) Two events which are mutually exclusive.
Sample space when three coins are tossed = [Sample space when a coin is tossed thrice!]
S = {HHH, HHT, HTH, THH, TTH, TTT}
(i)
A = Event that three heads show up = {HHH}
B = Event that three tails show up = {TTT}
A B = {HHH}
{TTT} =
; Hence A and B are mutually exclusive.