a) number greater than 9: 10,11,12,13,14,15
so 6 of them
prob(as stated) = 9/15 = 3/5
b) do it the same way, count how many are prime, and how many are composite
Tickst number 1-15are placed in a hat ,2 Tickets Are drawn at random without replacement find the probability that both Numbers Are Greater then 9
B.) the First Number is Prime and the Second number is Composite?
1 answer