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Suppose that six students, including Madhu and Puja, are having six beds arranged in a row. Further, suppose that Madhu does not want a bed adjacent to Puja. Then the number of ways, the beds can be allotted to students is
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Correct option is B
Number of ways of arranging beds =6P6=6!=720Number of ways in which Madhu and Puja have theire beds together is (2) 5P5=2(5!)=240Thus, required number of ways =720−240=480Similar Questions
The number of ways in which we can get at least 6 successive tails when a coin is tossed 10 times in a row, is
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