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A survey was made of 100 students who study German, French and Japanes

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A survey was made of 100 students who study German, French and Japanes  [#permalink]

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New post 10 Jul 2017, 04:24
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

56% (02:05) correct 44% (01:56) wrong based on 52 sessions

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Re: A survey was made of 100 students who study German, French and Japanes  [#permalink]

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New post 10 Jul 2017, 10:02
Given data : P(Total) = 100, we need to find out P(G U F)

(1) 51 students study German, while 31 students study German but not French.
P(G) = 51
P(Only G) + P(G U J) = 31
Therefore, P(G U F) + P(G U J U F) = 20.
This statement alone is not sufficient

(2) 9 students study German, French and Japanese.
P(G U J U F) = 9
This statement alone is not sufficient

On combining the information in both the statements,
We can clearly tell P(G U F) = 20 - 9 = 11(Sufficient) (Option C)
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Re: A survey was made of 100 students who study German, French and Japanes   [#permalink] 10 Jul 2017, 10:02
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A survey was made of 100 students who study German, French and Japanes

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