Probability question

Question

Bag A contains a red and blue marble. Bag B contains a: red, blue and yellow marble. One marble is taken from each bag. The probability to the nearest tenth, that the marbles are both the same colour are?

Answer 1

Prob(both red) = 1/2 * 1/3 = 1/6

Prob(both blue) = 1/2 * 1/3 = 1/6

final answer: 1/6+1/6 = 2/6 = 1/3 = 0.3333333........