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# pool of students question- data sufficiency

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Intern
Joined: 20 Aug 2018
Posts: 2
pool of students question- data sufficiency  [#permalink]

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25 Aug 2018, 13:04
Twelve representatives must be picked from a pool of n students who attend a certain class. If m of the students haven’t shown up today, how many different sets of representatives could be picked from the students who came today?

(1) If one less student had shown up, it would be possible to create 13 different sets
(2) n=m+1

a. if statement (1), BY ITSELF is sufficient to answer the question, but statement (2) by itself is not sufficient to answer the question;
b. if statement (2), BY ITSELF is sufficient to answer the question, but statement (1) by itself is not sufficient to answer the question;
c. if statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, but NEITHER statement BY ITSELF is sufficient to answer the question;
d. if EITHER statement BY ITSELF is sufficient to answer the question; and
e. if statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question.

The correct answer is D, but i dont knot why, could someone help me ? thanks !
MBA Section Director
Affiliations: GMATClub
Joined: 22 May 2017
Posts: 2936
GPA: 4
WE: Engineering (Computer Software)
Re: pool of students question- data sufficiency  [#permalink]

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27 Aug 2018, 01:11
1
Similar problem discussed here https://gmatclub.com/forum/twelve-juror ... 84102.html
_________________
Re: pool of students question- data sufficiency   [#permalink] 27 Aug 2018, 01:11
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