A) 635
B) 633
C) 634
D) 363
Correct Answer: B
Solution :
\[xy\Rightarrow \left( {{x}^{2}}-\text{ 1} \right)\left( {{y}^{2}}-1 \right)\] so \[82=({{8}^{2}}-1)({{2}^{2}}-1)=633\].
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