Problema Solution
christy rolls a number cube and then chooses a card from a set numbered 1 through 9. What is the probablity that she will roll an even number and choose an odd card?
Answer provided by our tutors
p(rolled number is even) = 3/6 = 1/2
p(odd card) = 5/9
p(roll an even number and choose an odd card) = p(rolled number is even)*p(odd card)
p(roll an even number and choose an odd card) = (1/2)(5/9)
p(roll an even number and choose an odd card) = 0.2778 or about 27.78%.