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What is the numerical coefficient in 9x²y?

Answer and explanation

Correct answer: 9

The governing concept is the numerical coefficient of a term. A coefficient is the number that multiplies the variable or literal part of an algebraic term. In 9x²y, the literal part is x²y and the numerical factor attached to it is 9. Thus the numerical coefficient is 9, making option B correct. Option A is the variable part, not a numerical value. Option C is the exponent of x; an exponent tells how many times x is used as a factor and is not the coefficient of the whole term. Option D, 9x, is only part of the term and still contains a variable, so it cannot be called the numerical coefficient. Separating coefficient, variable, and exponent prevents these common confusions.

Related tags

Numerical-CoefficientMonomialAlgebraic-ExpressionsMathematicsClass 9 McqAlgebraic ExpressionsIntroduction To Polynomials

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