Mathematics Past Questions and Answers

The sixth term of an A.P is half of its twelfth term. The first term of the A.P is equal to

A Zero
B Half of the common difference
C Double the common difference
D The common difference

Question 1577:

Factorize 4x² - 9y² + 20x + 25

A (2x -3y + 5)(2x - 3y - 5)
B (2x - 3y)(2x + 3y)
C (2x - 3y +5)(2x + 3y + 5)
D (2x + 5)(2x - 9y +5)

Question 1578:

A sector of a circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?

A 8cm
B 6cm
C 9cm
D 7cm

Question 1579:

A point P moves such that it is equidistant from Points Q and R. Find QR when PR = 8cm and angle PRQ = 30°

A 4√3cm
B 8cm
C 8√3cm
D 4cm

Question 1580:

A straight line makes an angle of 30° with the positive x-axis and cuts the y-axis at y = 5. Find the equation of the straight line.

A Y = (x/10) + 5
B Y = x + 5
C √3y = - x + 5√3
D √3y = x + 5√3