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Class 9MathematicsNumber SystemsExponentsMedium
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What is the value of (17^2-89)?

Answer and explanation

Correct answer: 200

First evaluate the exponent: \(17^2=17\times17=289\). Then \(289-89=200\), so the correct answer is \(200\). The option \(210\) may result from an error in subtraction. Exam tip: In a mixed expression, evaluate exponents before addition or subtraction.

Related tags

ExponentsInteger OperationsOrder Of OperationsNumber SystemsMental ArithmeticMathematicsClass 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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