What is the value of (21^3)?
Answer and explanation
Correct answer: 9261
An exponent of 3 means that 21 is multiplied by itself three times: \(21^3=21\times21\times21=441\times21=9261\). Therefore, option B is correct. A nearby value such as 9161 can result from an arithmetic error in multiplication. Exam tip: first find \(21^2=441\), then multiply it by 21.
Frequently asked questions
What is the correct answer to this question?
9261
Why is this the correct answer?
An exponent of 3 means that 21 is multiplied by itself three times: \(21^3=21\times21\times21=441\times21=9261\). Therefore, option B is correct. A nearby value such as 9161 can result from an arithmetic error in multiplication. Exam tip: first find \(21^2=441\), then multiply it by 21.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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