(Download) CBSE Class X Important Questions: 2012 - Mathematics
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Important Questions – 2012
Class – X
Subject –Mathematics
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. In an equilateral triangle ABC, if AD ┴ BC, then
(a) 3/4
(b) 4/3
(c) 1/2
(d) 2/1
5. 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
(a) 3:5
(b) 9:25
(c) 25:9
(d) 5:3
7. 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