#2. How does chocolate pudding solve the riddle?

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A: Once looking at the house number, the census taker knows the sum of the children’s ages, but there are still two groups of numbers multiply to 72 share the same sum: (2,6,6) and (3,3,8). Once the man said his eldest child liked chocolate pudding, she knew the second grouping must be right, because in the first, there is no eldest child.

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