CBSE [All India]_X_Mathematics_2010_Set III
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Q1Marks:1
Answer:

Q2
The slant height of the frustum of a cone is 5 cm. If
the difference between the radii of its two circular
ends is 4 cm, find the height of the frustum.Marks:1Answer:

Q3
A die is thrown once. What is the probability of getting a number greater than 4?
Marks:1Answer:

Q4
In figure, CP and CQ are tangents from external points C to a circle with centre O. AB is another tangent which touches the circle at R. If CP = 11 cm and BR = 4 cm, find the length of BC.
Marks:1Answer:
From the given figure we have
CP = CQ = 11cm and
BR = 4cm = BQ
BC = CQ – BQ
= 11 – 4
= 7 cm. 
Q5
In the given figure, DE is parallel to BC in triangle ABC such that BC = 8 cm , AB = 6 cm and DA = 1.5 cm. Find DE.
Marks:1Answer:

Q6
What is the distance between the points A(0, c) and
B(0, c)?Marks:1Answer:

Q7Marks:1
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Q8Marks:1
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Q9
If the sum of the first q terms of an A.P. is 2q + 3q^{2},
what is its common difference?Marks:1Answer:
We know that, S_{q} = 2q + 3q^{2 }
Where S_{1} = T_{1} = 5 and S_{2} = T_{1 }+ T_{2} = 16.
Therefore, T_{2 }=16 5 = 11.
Common difference = 11 – 5 = 6. 
Q10Marks:1
Answer: