A) 915
B) 946
C) 945
D) 916
Correct Answer: B
Solution :
\[{{T}_{r}}=r(2r-1)\] \[S=\Sigma 2{{r}^{2}}-\Sigma r\] \[S=\frac{2.n(n+1)(2n+1)}{6}-\frac{n(n+1)}{2}\] \[(44)(23)-66=946\]You need to login to perform this action.
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