Today's Question - In a certain town of one hundred men, 85 are married, 70 have a telephone, 75 own a car, and 80 own their own house. Of these 100 men, what is the least possible number who are married, have a telephone, own a car, and own their own house?

Reveal Answer Answer - The easiest way to solve was to look at the remainders: 15 are not married; 30 don't have a telephone; 25 don't have a car; 20 don't own a house. Since it's possible for all these 90 men to be different, that leaves 10 with a house, a car, a phone and a wife.

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