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06 Apr 2020, 12:37
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
75% (01:18) correct
25%
(01:28)
wrong
based on 334
sessions
History
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Time
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Not Attempted Yet
The primary schools in a city range from one to six stories in height. If a classroom in a primary school is above the second floor, it must have a fireproof door.
If the statements above are true, which of the following statements must also be true about primary-school rooms in the city?
(A) Some third-floor rooms in primary schools do not have fireproof doors.
(B) No second-floor classrooms in primary schools have fireproof doors.
(C) In primary schools, rooms above the second floor that are not classrooms do not have fireproof doors.
(D) Any fourth-floor classrooms in primary schools have fireproof doors.
(E) Primary schools with classrooms on the first floor only do not have any fireproof doors.
If the statements above are true, which of the following statements must also be true about primary-school rooms in the city?
(A) Some third-floor rooms in primary schools do not have fireproof doors.
(B) No second-floor classrooms in primary schools have fireproof doors.
(C) In primary schools, rooms above the second floor that are not classrooms do not have fireproof doors.
(D) Any fourth-floor classrooms in primary schools have fireproof doors.
(E) Primary schools with classrooms on the first floor only do not have any fireproof doors.
07 Apr 2020, 00:09
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carcass
Note that the prompt says if a classroom in a primary school is above second floor, it must have a fire proof door.
But the reverse may not be true. If it is below third floor, it is not mandatory to have fire proof door, but it still can have.
A. We are talking about class rooms only, may be a toilet or staff room does not or does have fire proof door. Cannot be inferred.
B. Incorrect. It is not mandatory to have, but still there can be rooms with fire proof doors.
C. This also cannot be inferred. All rooms may or may not have.
D. This can definitely be inferred. If it is a class room and above second floor, it must have fire proof door. Correct.
E. Cannot be inferred. It could be on second floor also.
D is correct
26 Jun 2025, 01:10
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