Question

Cards bearing numbers 1 ,3 ,5......37 are kept in a bag. A card is drawn at random from the Bag. Find the probability of getting a card
(a) a number divisible by 3 and 5

Answer 1

favorable out comes are 15,30
total outcomes=19
probability=2/19

Answer 2

possible outcomes divisible by 3=3,6,9,12,15,18,21,24,27,30,33,36.
divisible by 5=5,10,15,20,25,30,35.
probability =17/37