The total number of possible outcomes of a random experiment is called exhaustive events.
Ex. (i) In tossing a coin, exhaustive events are 2 (Head or tail)
(ii) In throwing a die, the exhaustive number of cases is 6, since any of the faces marked with 1, 2, 3, 4, 5 or 6 may come uppermost.
(iii) In drawing 4 cards from a well shuffled pack of 52 cards, the exhaustive number of cases is 52 C4, since 4 cards can be drawn out of 52 cards in 52 C4 ways.
