What is the value of (39^3)?
Answer and explanation
Correct answer: 59319
An exponent of 3 means multiplying 39 three times: \(39^3=39\times39\times39\). First, \(39^2=1521\). Then \(1521\times39=1521\times(40-1)=60840-1521=59319\). Hence, the correct answer is 59319. A value such as 58319 can result from an error in multiplication or subtraction. Exam tip: For numbers such as 39, use \(40-1\) to make the calculation quicker.
Frequently asked questions
What is the correct answer to this question?
59319
Why is this the correct answer?
An exponent of 3 means multiplying 39 three times: \(39^3=39\times39\times39\). First, \(39^2=1521\). Then \(1521\times39=1521\times(40-1)=60840-1521=59319\). Hence, the correct answer is 59319. A value such as 58319 can result from an error in multiplication or subtraction. Exam tip: For numbers such as 39, use \(40-1\) to make the calculation quicker.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
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