CBSE Important Questions

Mathmatics Class X

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  1. An ogive in used to determine

    (a) mean

    (b) median

    (c) mode

    (d) none of these .

  2. If the sum of the zeros of the polynomial is 1, then one of the value of k is

    (a)

    (b) - 14

    (c) 2

    (d) - 4

  3. In a ∆ABC,D and E are points on the sides AB and AC respectively such that DE//BC .If AD=2.5cm, BD=3.0 cm and AE = 3.75cm, then AC =

    (a) 7.25 cm

    (b) 8.25 cm

    (c) 8.75 cm

    (d) none

  4. The mean of a data, by step deviation method, is calculated by using the formula :

  1. In an equilateral triangle ABC, if AD ┴ BC, then

    2. (a) 3/4

    (b) 4/3

    (c) 1/2

    (d) 2/1

  1. If the sum of ages of father and his son is 65 years and twice the difference of their ages is 50 years, then age of father is

    (a) 45

    (b) 40

    (c) 50

    (d) 155

  2. Write the lower limit of the median class in the following frequency distribution .

    3. (a) 20

    (b) 30

    (c) 40

    (d) none of these

  1. If the length of the corresponding sides BC and QR of two similar triangles ABC and PQR are respectively 6cm and 10cm, then the ratio of the areas of ∆ABC and ∆PQR is

    (a) 3:5

    (b) 9:25

    (c) 25:9

    (d) 5:3

  2. is equal to

    (a) 0

    (b) 1

    (c) sinө + cosө

    (d) sinө − cosө

  3. A quadratic polynomial f (x) has two zeros namelya &b .find f (x) if (α +β ) = 19 and (α - β) = 5

    (a)

    (b)

    (c)

    (d) none

Submitted By: Mr. Agyat Gupta
Email Id: [email protected]
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