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The number of ways in which candidates can be ranked if is always above is
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Total number of ways to arrange candidates
and always be together and will be above and in the other half will be above
When in 2nd position can occupy only .
When in 3rd position can occupy only .
So, the number of ways in witch and will arranged
In the remaining positions other students can be permuted in ways.
Hence, total number of ways
Option D is correct
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Question Text | The number of ways in which candidates can be ranked if is always above is |
Answer Type | Text solution:1 |
Upvotes | 150 |