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Class 9MathematicsNumber SystemsExponentsMedium
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If (x^3=512) then what is the value of (x)?

Answer and explanation

Correct answer: 8

Given x^3=512. Since 8^3=8×8×8=512, x=8. Option 7 is not correct because 7^3=343. Exam tip: Memorising cubes of numbers from 1 to 10 helps solve such questions quickly.

Related tags

Number SystemsExponentsCubesCube RootsPerfect CubesMathematicsClass 9 Mcq
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10 more MCQs
  1. 1If A={x:x is prime and 10<x<30}, which is its roster form?
  2. 2If 0.2020020002... has no fixed repetition, what type of number is it?
  3. 3If 0.3030030003... has no fixed repetition, what type of number is it?
  4. 4If (x=\sqrt{11}) then what is (x^2+5)?
  5. 5If (x=\sqrt{3}) then what is (x^2+x^2)?
  6. 6If (x=\sqrt{2}), what is (x^2)?
  7. 7What is the value of (2^3)?
  8. 8What is the value of (5^2)?
  9. 9What is the value of (10^2)?
  10. 10What is the value of (3^2)?
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