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Class 9MathematicsNumber SystemsExponentsMedium
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What is the value of (30^2+100)?

Answer and explanation

Correct answer: 1000

Here, 30^2 means 30 × 30, which equals 900. Therefore, 30^2 + 100 = 900 + 100 = 1000. Option A includes only the value of 30^2 and does not add 100. Exam tip: Evaluate the exponent first, then perform addition or subtraction.

Related tags

ExponentsNumber SystemsOrder Of OperationsSquaresArithmeticMathematicsClass 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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