Which pair consists of like terms?
Answer and explanation
Correct answer: 7ab और -2ab
In 7ab and -2ab, the variable part ab is exactly the same: both a and b have exponent 1. Therefore, they are like terms even though their coefficients, 7 and -2, are different. In option C, the exponents of a and b are interchanged, so those terms are not like terms. Exam tip: compare only the variables and their exponents; coefficients need not be the same.
Frequently asked questions
What is the correct answer to this question?
7ab और -2ab
Why is this the correct answer?
In 7ab and -2ab, the variable part ab is exactly the same: both a and b have exponent 1. Therefore, they are like terms even though their coefficients, 7 and -2, are different. In option C, the exponents of a and b are interchanged, so those terms are not like terms. Exam tip: compare only the variables and their exponents; coefficients need not be the same.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Algebraic expressions.
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