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Grade 12Differential Calculus

how to calculate rank in permutations

Profile image of yedu 9703562152 mahendra
13 Years agoGrade 12
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1 Answer

Profile image of Shaurya Gupta
13 Years ago

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.