If a card is randomly drawn from a set of identical cards numbered from 1 to 5, find its probability of having an even number.
The probability of event occurring is equal to the number of
favorable outcomes divided by the total number of possible
outcomes in the sample space, . In this case, event is
drawing a card with an even number. The cards with even numbers
are 2 and 4, so these are the favorable outcomes for event .
Find the probability of event as follows: