Direction: Study the given information carefully and answer the question. Fifty books belonging to different subjects, viz History (8) Geography (7) Literature (13) Psychology (8) and Science (14)…
Question and options
Direction: Study the given information carefully and answer the question.
Fifty books belonging to different subjects, viz History (8) Geography (7) Literature (13) Psychology (8) and Science (14) are placed on a shelf. They are arranged in an alphabetical order, subject to the condition that no two books of the same subjects are placed together so long as books of other subjects are available. Unless otherwise mentioned all counting is done from the left.
Fifty books belonging to different subjects, viz History (8) Geography (7) Literature (13) Psychology (8) and Science (14) are placed on a shelf. They are arranged in an alphabetical order, subject to the condition that no two books of the same subjects are placed together so long as books of other subjects are available. Unless otherwise mentioned all counting is done from the left.
Which subject does the 40th book belong to?
- Science
- Psychology
- History
- Literature
Answer and explanation
Correct answer: D - Literature
Alphabetical cycle G, H, L, P, S, repeated without adjacent same subjects. Geography (7) runs out after 7 full cycles = 35 books. Cycle 8 is H L P S (36 to 39). The remaining 5 Literature and 6 Science alternate from 40: L S L S L S L S L S S. So the 40th book is Literature.
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CUSAT CAT Integrated IPR Ph.D.
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