Let the sum of the first n terms of a non-constant A.P.,a1,a2,a3,....,an be 50n+2n(n−7)A, where A is a constant. If d is the common difference of this A.P., then the ordered pair (d,a50) is equal to
Held on 9 Apr 2019 · Verified 6 Jul 2026.
(50,50+46A)
(A,50+45A)
(50,50+45A)
(A,50+46A)
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