Edmund's Brainteasers
Problem 15
Solution
Problem 15: Cold days. Solution
As each Sunday was warmer than the one before, no two temperatures were the same. For 12 to be a product of five different whole numbers they must be 1, -1, 2, -2 and 3. As each Sunday was warmer than the one before, the temperatures on the five Sundays were -2, -1, 1, 2, 3.