माना a(1),a(2),a(3),……………,a(49) समान्तर ...

माना `a_(1),a_(2),a_(3),……………,a_(49)` समान्तर श्रेढी इस प्रकार है कि `sum_(k=0)^(12)a_(4k+1)=416` तथा `a_(9)+a_(43)=66`, यदि `a_(1)^(2)+a_(2)^(2)+……….+a_(17)^(2)=140m` है, तब m बराबर है-

A

66

B

68

C

34

D

33

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The correct Answer is:

C

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