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JEE Advanced Mathematics question

MathematicsPermutations and CombinationsJEE Advanced

If the difference of the number of arrangements of 3 things from a certain number of dissimilar things and the number of selections of the same number of things from them exceeds 100 then the least number of dissimilar things is

Answer: (B)

Solution

, i.e.

n(n-1)(n-2) > 1

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Question ID VK-110382