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If for a sequence {a(n)},S(n)=2n^(2)+9n,...

If for a sequence `{a_(n)},S_(n)=2n^(2)+9n`, where `S_(n)` is the sum of n terms, the value of `a_(20)` is

A

65

B

75

C

87

D

97

Text Solution

Verified by Experts

The correct Answer is:
C
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