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# Sam took a test that had 80 questions numbered from 1 to 80. How many

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Math Expert
Joined: 02 Sep 2009
Posts: 49320
Sam took a test that had 80 questions numbered from 1 to 80. How many  [#permalink]

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28 Sep 2017, 04:53
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Difficulty:

35% (medium)

Question Stats:

61% (00:52) correct 39% (00:52) wrong based on 49 sessions

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Sam took a test that had 80 questions numbered from 1 to 80. How many of the questions did he answer correctly?

(1) He answered 3/4 of the odd numbered questions in the first half of the test correctly.
(2) He answered 7 more questions correctly in the first half of the test than in the second half of the test.

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Joined: 28 May 2014
Posts: 528
GMAT 1: 730 Q49 V41
Re: Sam took a test that had 80 questions numbered from 1 to 80. How many  [#permalink]

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28 Sep 2017, 08:47
(1) He answered 3/4 of the odd numbered questions in the first half correctly - No information about second half. Insuff.

(2) He answered 7 more questions correctly in the first half than in the second half - No information about the first half. Insuff.

(1) & (2) together:
Only odd numbered questions of first half can be calculated. No info. about even numbered questions. Insuff.

Ans: E.
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Re: Sam took a test that had 80 questions numbered from 1 to 80. How many &nbs [#permalink] 28 Sep 2017, 08:47
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# Sam took a test that had 80 questions numbered from 1 to 80. How many

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