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Joe took 20 equally weighted quizzes for his biology class and receive

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Joe took 20 equally weighted quizzes for his biology class and receive  [#permalink]

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New post 02 Dec 2019, 01:24
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Difficulty:

  45% (medium)

Question Stats:

64% (01:20) correct 36% (02:18) wrong based on 22 sessions

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Joe took 20 equally weighted quizzes for his biology class and receive  [#permalink]

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New post 02 Dec 2019, 02:05
MM for each test = 10
so for 20 tests ; 200 and 96% . 192
#1 n>18
n has to be 20 ; sufficient
#2
n<=20
insufficient as no of test taken can be with full 10/10 scores as well and n can vary
IMO A
Bunuel wrote:
Joe took 20 equally weighted quizzes for his biology class and received an average score of 96% on those quizzes. If he received a grade of 96% on exactly n of the quizzes, what is n?

(1) \(n>18\)

(2) \(n\leq20\)


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Joe took 20 equally weighted quizzes for his biology class and receive   [#permalink] 02 Dec 2019, 02:05
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