The probability that a number selected at random from the numbers 1, 2, 3,...,15 is a multiple of 4, is
Total numbers of elementary events are: 15
Let E be the event of getting a multiple of 4
Favorable outcomes are: 4, 8, 12
Numbers of favorable outcomes are = 3
P (multiple of 4) = P (E) = 3/15 = 1/5