CBSE [Delhi]_X_Mathematics_2013_Set I
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Q1
Marks:1Answer:
Option C is the correct answer.

Q2
Marks:1Answer:
Option B is the correct answer.

Q3
In figure, a circle with centre O is inscribed in a quadrilateral ABCD such that, it touches the sides BC, AB, AD and CD at points P, Q, R and S respectively. If AB=29cm, AD=23cm, B=90° and DS= 5cm, then the radius of the circle (in cm.) is:
(A) 11 (B) 18
(C) 6 (D) 15
Marks:1Answer:
Option A is the correct answer.
Given:
AB, BC, CD and AD are tangents to the circle with centre O at Q, P, S and R respectively.AB = 29 cm, AD = 23, DS = 5 cm and ∠B = 90°
Construction: Join PQ.

Q4
The angle of depression of a car, standing on the ground, from the top of a 75m high tower, is 30°. The distance of the car from the base of the tower (in m.) is:
(A) 253
(B) 503
(C) 753
(D) 150Marks:1Answer:
Option C is the correct answer.

Q5
Marks:1Answer:
Option A is the correct answer.

Q6
Marks:1Answer:
Option C is the correct answer.

Q7
Marks:1Answer:
Option C is the correct answer.

Q8
Marks:1Answer:
Option B is the correct answer.

Q9
Marks:2Answer:

Q10
How many threedigit numbers are divisible by 7?
Marks:2Answer: