1.

If 12 + 22 + 32 + . . . . . + p2 = $$\left[ {\frac{{{\text{p}}\left( {{\text{p}} + 1} \right)\left( {2{\text{p}} + 1} \right)}}{6}} \right]{\text{,}}$$then 12 + 32 + 52 + . . . . . + 172 is = ?

A. 69
B. 785
C. 80
D. 700
Answer» B. 785


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