- An ogive in used to determine
(a) mean
(b) median
(c) mode
(d) none of these .
- 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
- 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
- The mean
of a data, by step deviation method, is
calculated by using the formula :
- In an equilateral triangle ABC, if AD ┴ BC, then
(a) 3/4
(b)
4/3
(c)
1/2
(d)
2/1
- 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
- Write the lower limit of the median class in the following
frequency distribution .
(a) 20
(b) 30
(c) 40
(d) none of these
- 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
is equal to
(a) 0
(b) 1
(c) sinө + cosө
(d) sinө − cosө
- 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
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