5. Three coins are tossed. Describe
(iv) Two events which are mutually exclusive but not exhaustive.
Sample space when three coins are tossed = [Sample space when a coin is tossed thrice!]
S = {HHH, HHT, HTH, HTT, THH, TTH, THT, TTT}
Let ,
A = Getting exactly one head = {HTT, THT, TTH}
B = Getting exactly one tail = {HHT, HTH, THH}
Clearly, A B =
Hence, A and B are mutually exclusive.
Also, A B S
Hence, A and B are not exhaustive.