Define the events A = spinning any number but 4 (ie not getting 4) B = flipping tails
For each event, the probabilities are: P(A) = 4/5 because there are four numbers that aren't "4" out of five numbers total P(B) = 1/2 assuming the coin is fair and each side is likely
P(A and B) = P(A)*P(B) is possible because the two events A and B are independent
So, P(A and B) = P(A)*P(B) P(A and B) = (4/5)*(1/2) P(A and B) = (4*1)/(5*2) P(A and B) = 4/10 P(A and B) = 2/5
The answer as a fraction is 2/5 In decimal form, the answer is 0.4
