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how to calculate rank in permutations
depends if for cbse direct way - by fixing the first lettre alphabetically of the word and finding the total no of each words formed starting from A if the word is say ''AND'' then we know that the first word is ADN, then AND . which will give 2. For IIT-JEE the method is complex.
depends if for cbse direct way - by fixing the first lettre alphabetically of the word and finding the total no of each words formed starting from A if the word is say ''AND'' then we know that the first word is ADN, then AND . which will give 2.
For IIT-JEE the method is complex.
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