If a card is randomly drawn from a set of identical cards numbered from 1 to 41, find its probability of having a number that is divisible by 4.
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 that is divisible by 4. The cards that are
divisible by 4 are 4, 8, 12, 16, 20, 24, 28, 32, 36, and 40, so
these are the favorable outcomes for event . Find the
probability of event as follows:
Thus, the probability of drawing a card that is divisible by 4 is .