3.Each of two boxes contains three chips numbered 1,2,3.A chip is drawn randomly from each box and the numbers on the two chips are multiplied.What is the probability that their product is even?( ) 兩個盒子中的每一個都包含編號為1,2,3的三個籌碼。從每個盒子中隨機抽取一個籌碼,然后將兩個籌碼上的數(shù)字相乘。他們的乘積是偶數(shù)的概率是多少?( )