A) 80-9
B) 64-8
C) 36-6
D) 49-7
Correct Answer: A
Solution :
One number\[\text{=(Other}\,\,\text{number}{{\text{)}}^{\text{2}}}\] i.e., \[64={{(8)}^{2}},\,\,36={{(6)}^{2}},\,\,{{(7)}^{2}}=49\] But \[{{(9)}^{2}}=81\ne 80\]
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