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The number of ways in which ten candidates A1, A2........A10 can be arranged in vertical row(column) when 1)if A1, A2 are next to each other. [9!.2!] 2)if A1 is just above A2. [9!] 3)if A1 is always above A2. [10!/2!] 4)if A1 is always above A2 and A2 is above A3 is.[10!/3!] 5)if A1, A2, A3 sit together in a specified order is. [8!] Please explain solution in detail for the 3,4,5 specially. And kindly don't close the question for whatsoever reason as i typed it with a lot of hard work.[ Answers in bracket.] |
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Answer» The number of ways in which ten candidates A1, A2........A10 can be arranged in vertical row(column) when 1)if A1, A2 are next to each other. [9!.2!] 2)if A1 is just above A2. [9!] 3)if A1 is always above A2. [10!/2!] 4)if A1 is always above A2 and A2 is above A3 is.[10!/3!] 5)if A1, A2, A3 sit together in a specified order is. [8!] Please explain solution in detail for the 3,4,5 specially. And kindly don't close the question for whatsoever reason as i typed it with a lot of hard work.[ Answers in bracket.] |
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