0
Q:

# PR is a tangent to a circle with centre O and radius 4 cm at point Q. If ∠POR = 90°, OR = 5 cm and OP = 20/3 cm, then the length of PR is:

 A) 16/3 cm B) 23/3 cm C) 25/3 cm D) 3 cm

Explanation:
Q:

Which of the following quadratic equations has real roots?

 A) 4x2 - 7x + 5 = 0 B) 5x2 - 11x + 7 = 0 C) 5x2 - 11x + 8 = 0 D) 2x2 - 7x + 5 = 0

Answer & Explanation Answer: D) 2x2 - 7x + 5 = 0

Explanation:

0 15
Q:

∆ABC is similar to ∆PQR. If ratio of perimeters of ∆ABC and ∆PQR is 1:2 and if PQ = 10 cm then what is the length of AB (in cm)?

 A) 5 B) 20 C) 25 D) 15

Explanation:

0 5
Q:

cos(A+B) + cos(A-B) is equal to

 A) 2cosAcosB B) 2sinAsinB C) 2sinAcosB D) 2cosAsinB

Explanation:

0 24
Q:

Dodecahedron has 20 vertices. How many edges does it have?

 A) 30 B) 16 C) 12 D) 24

Explanation:

0 26
Q:

What is the slope of the line parallel to the line passing through the points (3 , -4) and (-2 , 5)?

 A) 9/5 B) -5/9 C) -9/5 D) 5/9

Explanation:

0 51
Q:

∆ABC is right angled at B. BD is an altitude. AD = 4 cm and DC = 9 cm. What is the value of BD (in cm)?

 A) 5 B) 4.5 C) 5.5 D) 6

Explanation:

0 94
Q:

At what point does the line 2x - 3y = 6 cuts the X axis?

 A) (-3 , 0) B) (0 , 3) C) (0 , -3) D) (3 , 0)

Explanation:

0 44
Q:

The 5th and 9th term of an arithmetic progression are 7 and 13 respectively. What is the 15th term?

 A) 22 B) 21 C) 55 D) 59