42. If x = 27 and *x + y = 3729, th...
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42. If x = 27 and *x + y = 3729, then y = (1) 64 (2) 125 (3) 216 (4) 81

11th - 12th Class
Maths
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42. (3) ( x=27 ) ( therefore sqrt[3]{x}+sqrt[3]{y}=sqrt[3]{729} ) ( Rightarrow sqrt[3]{27}+sqrt[3]{y}=9 ) ( Rightarrow 3+sqrt[3]{y}=9 ) ( Rightarrow sqrt[3]{y}=9-3=6 ) ( therefore y=(6)^{3}=216 )
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