What is the value of (5^3-5^2)?
Answer and explanation
Correct answer: 100
Evaluate the powers first: \(5^3=125\) and \(5^2=25\). Therefore, \(5^3-5^2=125-25=100\), so option B is correct. \(125\) is only the value of \(5^3\); it does not include subtracting \(5^2\). Exam tip: In expressions with exponents, evaluate each power before performing addition or subtraction.
Frequently asked questions
What is the correct answer to this question?
100
Why is this the correct answer?
Evaluate the powers first: \(5^3=125\) and \(5^2=25\). Therefore, \(5^3-5^2=125-25=100\), so option B is correct. \(125\) is only the value of \(5^3\); it does not include subtracting \(5^2\). Exam tip: In expressions with exponents, evaluate each power before performing addition or subtraction.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Number Systems. Topic: Exponents.
Student feedback
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
