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.
Counting from the right, to which subject does the 39th book belong?
- History
- Psychology
- Geography
- Science
Answer and explanation
Correct answer: A - History
39th from the right = 50 - 39 + 1 = 12th from the left. Positions 11 to 15 are the third G H L P S cycle, so the 12th is History.
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CUSAT CAT Integrated IPR Ph.D.
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