Question
A number is chosen at random from the set 1 , 2 , 3 , … , 2000 . Let p be the probability that the chosen number is a multiple of 3 or 7 . Then the value of 500 p is ____.
A number is chosen at random from the set 1 , 2 , 3 , … , 2000 . Let p be the probability that the chosen number is a multiple of 3 or 7 . Then the value of 500 p is ____.
A. A
Multiple of 3 = 3 , 6 , 9 … . 1998 are 666 Multiple of 7 = 7 , 14 … . 1995 are 285 Multiple of 21 = 21 , 42 … 1995 are 95 p = 666 + 285 - 95 2000 = 856 2000 = 214 500 = p 500 p = 214
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