A) 70
B) 74
C) 68
D) 86
Correct Answer: B
Solution :
\[{{4}^{2}}+{{3}^{2}}+{{2}^{2}}+{{1}^{2}}=16+9+4+1=30\] \[{{8}^{2}}+{{7}^{2}}+{{6}^{2}}+{{5}^{2}}=64+49+36+25=174\] Similarly, \[{{6}^{2}}+{{5}^{2}}+{{2}^{2}}+{{3}^{2}}=36+25+4+9=74\]
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