Hi,

250 gamblers, the BIG question is how many played neither poker or blackjack

124 played poker

96 played blackjack

51 played both 



124 - 51 = 73, played only blackjack

 96 - 51 = 45, played only poker

 73+45+51 = 169, played either one or the other or both

250 - 169 = 81, played neither 

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