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Class 9MathematicsNumber SystemsExponentsExpert
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If (2^x = 8) and (3^y = 27) then x+y

Answer and explanation

Correct answer: 6

Since 8 = 2^3, x = 3, and since 27 = 3^3, y = 3. Therefore, x + y = 3 + 3 = 6, so option C is correct. In exponent questions, first determine each variable separately and then perform the required operation.

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ExponentsNumber SystemsExponential EquationsPowersClass 9 MathematicsMathematicsClass 9 Mcq
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