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counting and probability junior
Problem
Each of two boxes contains three chips numbered , , . 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?
(A)
(B)
(C)
(D)
(E)
Solution
(This solution is similar to Solution 2.) Let's make this a problem with boxes. In total, there are 9 products derived from these numbers (because 3 numbers per box). This would be our denominator. Every time a spinner lands on 2, we get an even product. These are , , , , and finally . Going back, we see there are possible combinations, and we have evens, the final answer is .
Final answer
E