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[" Q.20If "2^(x+y)=128" and "4^(x-y)=16"...

[" Q.20If "2^(x+y)=128" and "4^(x-y)=16" ,then find "x/y" ."],[[" (A) "2/3," (B) "5/9],[" (C) "9/5," (D) "3/5]]

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