For r = 0, 1, …, 10, let Ar, Br and Cr denote, respectively, the coefficient of xr in the expansions of (1 + x)10, (1 + x)20 and (1 + x)30. Then ()1010101=-?rrrrABBCA is equal to
nikhil
12 Years agoGrade
1 Answer
Saurabh Koranglekar
6 Years ago
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