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11.
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Question: Four subjects - Physics,
Chemistry, Mathematics and Biology - were taught in four consecutive periods
of one hour each starting from 8.00 a.m. At what time was the Chemistry
period scheduled ?
Statements:
I.
Mathematics
period ended at 10.00 a.m., which was preceded by Biology.
II.
Physics
was scheduled in the last period.
III.
Mathematics
period was immediately followed by Chemistry.
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A.
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Only I
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B.
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Either I only or II
only
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C.
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Only II
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D.
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Only II and III
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E.
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Only I and either II or
III
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Answer: Option E
Explanation:
From I and II, we conclude that Mathematics
period began at 9.00 a.m., Biology period began at 8.00 a.m. and Physics period
began at 11 a.m. So, the Chemistry period began at 10.00 a.m.
From I and III, we conclude that Mathematics
period ended and Chemistry period began at 10.00 a.m.
