Update ANS: For r=0,1,...,10, if A r ,B r and C r denote respectively the coefficient of x r in the expansions of (1+x) 10 ,(1+x) 20 and (1+x) 30 . Then, ∑A r (B 10 B r −C 10 A r ) is equal to

12 Jul 2022

For r=0,1,...,10, if A r ,B r and C r denote respectively the coefficient of x r in the expansions of (1+x) 10 ,(1+x) 20 and (1+x) 30 . Then, ∑A r (B 10 B r −C 10 A r ) is equal to

For r=0,1,...,10, if A r ,B r and C r denote respectively the coefficient of x r in the expansions of (1+x) 10 ,(1+x) 20 and (1+x) 30 . Then, ∑A r (B 10 B r −C 10 A r ) is equal to

For r=0,1,...,10, if A r ,B r and C r denote respectively the coefficient of x r in the expansions of (1+x) 10 ,(1+x) 20 and (1+x) 30 . Then, ∑A r (B 10 B r −C 10 A r ) is equal to

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