What is the value of (81\div3^2)?
Answer and explanation
Correct answer: 9
According to the order of operations, evaluate the exponent first: \(3^2=9\). Then \(81\div 9=9\), so option C is correct. Option A (3) may result from confusing the base with the value of the expression, while option B ignores the division. Exam tip: In such expressions, calculate exponents before performing division.
Frequently asked questions
What is the correct answer to this question?
9
Why is this the correct answer?
According to the order of operations, evaluate the exponent first: \(3^2=9\). Then \(81\div 9=9\), so option C is correct. Option A (3) may result from confusing the base with the value of the expression, while option B ignores the division. Exam tip: In such expressions, calculate exponents before performing division.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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