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When I get my tax refund this year , there’s a 30% chance I will buy a wide screen tv, a 20% chance I’ll buy a blue ray player and a 10% chance I’ll buy both. What’s the chance I buy neither?

 Mar 1, 2020
 #1
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100 - 30 = 70

70 - 20 = 50

50 - 10 = 40

 Mar 1, 2020

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