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Class 9MathematicsNumber SystemsExponentsHard
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What is the value of (9^3 \div 9^1)?

Answer and explanation

Correct answer: 81

When powers with the same base are divided, their exponents are subtracted: \(9^3 \div 9^1 = 9^{3-1}=9^2=81\). Therefore, option D is correct. Option A uses only the base, while option C is the value of \(9^3\) itself. Exam tip: remember the rule \(a^m \div a^n=a^{m-n}\).

Related tags

ExponentsNumber SystemsLaws Of ExponentsDivision Of PowersMathematicsClass 9 Mcq
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  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?
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  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)?
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