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Class 9MathematicsNumber SystemsExponentsMedium
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If (z^3=729) then what is the value of (z)?

Answer and explanation

Correct answer: 9

Since 9 × 9 × 9 = 729, we get z = 9. The cube of 8 is 512, so 8 is not correct. Exam tip: verify a perfect cube by multiplying the number by itself three times.

Related tags

ExponentsCube RootsPerfect CubesNumber SystemsClass 9 MathematicsMathematicsClass 9 Mcq
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