Jake Loves Steak; Tr­ish Loves Fish

MEDIUM

Reader's Digest - - The Genius Section -

Ja­cob en­joys steak so much that the prob­a­bil­ity that he’ll have it for din­ner on any given evening is one in three. The fa­vorite dish of his wife, Pa­tri­cia, is fresh fish. The prob­a­bil­ity that she’ll have it for din­ner on any given evening is one in two. Be­cause Ja­cob and Pa­tri­cia al­ways dine to­gether, they’ll never have steak and fish on the same night. On av­er­age, how many times in a 30-day month will they be hav­ing ei­ther steak or fish?

25 NIGHTS

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