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Misconception

Class 9 Mathematics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

MathematicsA student says that the sequence 2, 5, 9, 14 is an arithmetic progression because its terms are continuously increasing. What is the student's error?Class 9Sequences and ProgressionsArithmetic ProgressionMedium MathematicsRiya says that the sequence 3, 7, 11, 16 is an arithmetic progression because its terms are increasing. What is the error in Riya's reasoning?Class 9Sequences and ProgressionsArithmetic ProgressionMedium MathematicsA student says that the sequence 5, 9, 14, 18 is an arithmetic progression because every next term is greater. What is the student's error?Class 9Sequences and ProgressionsArithmetic ProgressionMedium MathematicsA student says that \(7-\frac{x}{2}\) is not a polynomial because the coefficient of \(x\) is a fraction. What is the correct evaluation of this statement?Class 9Introduction to PolynomialsLinear polynomialsExpert MathematicsA student says that 7x³ - 5/x + 2 is a polynomial of degree 3. Which term causes an error in the student's conclusion?Class 9Introduction to PolynomialsDegree of a PolynomialHard MathematicsA student says that the degree of the polynomial \(P(x)=4x^3-9x+6\) is \(3+1=4\). Which is the correct correction to the student's statement?Class 9Introduction to PolynomialsDegree of a PolynomialExpert MathematicsReema says that the degree of the polynomial \(7-3x^4+5x^2\) is 2 because its last term is \(5x^2\). What is Reema's error?Class 9Introduction to PolynomialsDegree of a PolynomialExpert MathematicsA student claims that the degree of a polynomial is always equal to its number of terms. Which of the following examples disproves this claim?Class 9Introduction to PolynomialsDegree of a PolynomialExpert MathematicsA student says that the degree of the polynomial \(7-4x^2+x^5\) is 2 because the coefficient of \(x^2\) is larger. What is the error in the student's statement?Class 9Introduction to PolynomialsDegree of a PolynomialMedium MathematicsReema says that the degree of the polynomial \(6p^2-p+8\) is 3 because it has three terms. Which option is correct about Reema's statement?Class 9Introduction to PolynomialsDegree of a PolynomialEasy MathematicsIf a student says that the difference between the lengths (\sqrt{10}) and (\sqrt{11}) is (1), what is the correct correction?Class 9Number SystemsSquare root spiralExpert MathematicsA student claims that the sum of two irrational numbers is always irrational. Which of the following expressions is a counterexample to the claim?Class 9Number SystemsIrrational numbersHard MathematicsA student says, “The sum of two irrational numbers can never be rational.” Which of the following pairs proves this statement wrong?Class 9Number SystemsIrrational numbersHard MathematicsA student claims that the product of any two irrational numbers is always irrational. Which pair of numbers disproves this claim?Class 9Number SystemsReal NumbersMedium MathematicsA student claims that the sum of two irrational numbers is always irrational. Which of the following examples disproves this claim?Class 9Number SystemsReal NumbersMedium