JEE Math Practice Question
Let the sum of the first n terms of a non-constant A.P., a1, a2, a3, ..... be $$50n + {{n(n - 7)} \over 2}A$$, where A is a constant. If d is the common difference of this A.P., then the ordered pair (d, a50) is equal to
- A.(A, 50+45A)
- B.(50, 50+45A)
- C.(A, 50+46A)
- D.(50, 50+46A)
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