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Mathematics Class 9

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

MathematicsIn the linear rule (B(t)=130-8t), what is the rate of change per unit?Class 9Introduction to PolynomialsLinear growth and decayLevel 40Easy MathematicsIf (Z(t)=7+11t), what is the growth rate?Class 9Introduction to PolynomialsLinear growth and decayLevel 39Easy MathematicsWhich rule represents linear growth?Class 9Introduction to PolynomialsLinear growth and decayLevel 38Easy MathematicsIn a shop, if \(x\) represents the number of discount coupons, the net amount is \(B(x)=120-8x\). A student calls it a constant polynomial because 120 is a constant number. Which is the correct correction of the student's statement?Class 9Introduction to PolynomialsLinear polynomialsLevel 33Expert MathematicsWhat is the degree of the polynomial (10x^3-9x+14)?Class 9Introduction to PolynomialsDegree of a PolynomialLevel 34Easy MathematicsWhich expression is not a linear polynomial?Class 9Introduction to PolynomialsLinear polynomialsLevel 30Easy MathematicsIf (3x+2=17), what is the value of (x^2-1)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 24Expert MathematicsWhich option gives the correct simplified form of (2a^2-3ab+4b^2-a^2+5ab-b^2)?Class 9Introduction to PolynomialsAlgebraic expressionsLevel 23Hard MathematicsA student claims that \(\sqrt{2}+\sqrt{3}\) is a rational number. Which argument correctly identifies the error in this claim?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Level 17Expert MathematicsA student believes that any number with an infinite decimal expansion must be irrational. Which example disproves this statement?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Level 18Medium MathematicsIf \(\sqrt{2}\) is assumed to be \(\frac{p}{q}\) in lowest terms, which conclusion creates the contradiction in proving that it is irrational?Class 9Number SystemsProof of irrationality of square root 2 and square root 3Level 21Easy MathematicsReena states: “\(\sqrt{12}+\sqrt{27}\) is irrational because the sum of two irrational numbers is always irrational.” What is the correct evaluation of her statement?Class 9Number SystemsIrrational numbersLevel 15Expert MathematicsRina says in class that the sum of two irrational numbers is always irrational. Which of the following examples disproves her statement?Class 9Number SystemsIrrational numbersLevel 14Expert MathematicsRiya states, “The product of two irrational numbers is always irrational.” Which of the following examples disproves her statement?Class 9Number SystemsIrrational numbersLevel 13Expert MathematicsIf two irrational numbers \(a\) and \(b\) are such that \(a+b\) is rational, which conclusion about \(ab\) is correct?Class 9Number SystemsIrrational numbersLevel 15Hard MathematicsWhich conclusion about the side of a square tile with an area of 50 cm² is correct?Class 9Number SystemsIrrational numbersLevel 14Hard MathematicsRiya says, “Any number with an infinite decimal expansion must be irrational.” Which example proves Riya’s statement wrong?Class 9Number SystemsIrrational numbersLevel 13Medium MathematicsA student calls the number \(0.101001000100001\ldots\) rational because it contains only the digits 0 and 1. What is the correct conclusion?Class 9Number SystemsIrrational numbersLevel 13Medium MathematicsRiya states, “The sum of any two irrational numbers is always irrational.” Which example proves her statement wrong?Class 9Number SystemsIrrational numbersLevel 17Easy MathematicsWhich type of decimal expansion identifies an irrational number?Class 9Number SystemsIrrational numbersLevel 16Easy