Question

Henry has chosen 5 numbers from the set {1, 2, 3, 4, 5, 6, 7}. If he told Olivia what the product of the numbers was, that would not be enough information for her to figure out whether the sum of the chosen numbers was even or odd. What is the product of the chosen numbers?


Please answer sensibly.
Thanks!

Answer 1

Answer:

even, (2) only two elements are left