Triangles – Previous Years Questions Let △ABC ~ △DEF and their areas be respectively 81 cm2 and 144 cm2 . If EF = 24 cm, then length of side BC is _________ cm. [CBSE 2020] [1 Mark] Given △ABC ~ △PQR, if AB/PQ = ⅓, then find the (ar △ABC)/(ar △PQR). [CBSE 2018] [1 Mark] […]
Arithmetic Progressions Previous Years Questions For what value of k will k + 9, 2k – 1 and 2k + 7 are the consecutive terms of an A.P. ? [CBSE 2016] [1 Mark] In an AP, if the common difference is -4 and the seventh term is 4, then find the first term. [CBSE 2018] […]
Real Numbers – Previous Years Questions What is the HCF of smallest prime number and the smallest composite number ? [CBSE 2018] [1 Mark] Find after how many places of decimal the decimal form of the number will terminate. [CBSE 2019] [1 Mark] Express 429 as a product of its prime factors. [CBSE 2019] [1 […]
Quadratic Equations – Previous Years Questions The quadratic equation x2 – 4x + k = 0 has distinct real roots if k = 4 k > 4 k = 16 k < 4 [CBSE 2020] [1 Mark] Write the discriminant of the quadratic equation (x + 5)2 = 2(5x – 3). [CBSE 2019] [1 Mark] […]
Pair of Linear Equations in Two Variables – Previous Years Questions The pair of linear equations y = 0 and y = -6 has a unique solution no solution infinitely many solution only solution (0,0) [CBSE 2020] [1 Mark] Solve the following pair of linear equations:3x – 5y = 42y + 7 = 9x [CBSE […]
Polynomials Important Questions If one of the zeroes of the cubic polynomial x3 + ax2 + bx + c is -1, then the product of other two zeroes is b – a + 1 b – a – 1 a – b + 1 a – b – 1 Find a quadratic polynomial, the sum […]
Polynomials Previous Years Questions The number of zeroes for a polynomial p(x) where graph of y = p(x) is given in figure is- 3 4 0 5 [CBSE 2020] [1 Mark] If x = 3 is one root of the quadratic equation x2 – 2kx – 6 = 0, then find the value of k. […]