Sum of first fifteen terms of series 3+19+35+… is

1.	Sum of first fifteen terms of series 3+19+35+… is
A.	1725
B.	345
C.	69
D.	23
Answer» B. 345

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Sum&nbsp;of&nbsp;first&nbsp;fifteen&nbsp;terms&nbsp;of&nbsp;series&nbsp;3+19+35+&hellip;&nbsp;is

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Sum of first fifteen terms of series 3+19+35+… is