Mathematics Past Questions And Answers
A number is chosen at random from 10 to 30 both inclusive. What is the probability that the number is divisible by 3?
- A. 2/15
- B. 1/10
- C. 1/3
- D. 2/5
How many faces have a cuboid?
- A. 4
- B. 8
- C. 6
- D. 12
Find the truth set of the equation x2 = 3(2x + 9)
- A. {x : x = 3, x = 9}
- B. {x : x = -3, x = -9}
- C. {x : x = 3, x = -9}
- D. {x : x = -3, x = 9}
Simplify \(\frac{3(2^{n+1}) - 4(2^{n-1})}{2^{n+1} - 2^n}\)
- A. 2n+1
- B. 2n-1
- C. 4
- D. 1/4
In the diagram, PQRS is a circle with O as centre and PQ/RT. If RTS = 32°. Find PSQ

- A. 32°
- B. 45°
- C. 58°
- D. 90°
An exterior angle of a regular polygon is 22.5°. Find the number of sides.
- A. 13
- B. 14
- C. 15
- D. 16
If sin θ = cos θ, find θ between 0° and 360°
- A. 45°, 225°
- B. 135°, 315°
- C. 45°, 315°
- D. 135°, 225°
If the angles of a quadrilateral are (3y + 10)°, (2y + 30)°, (y + 20)° and 4y°. Find the value of y.
- A. 66°
- B. 12°
- C. 30°
- D. 42°
Evaluate \(\frac{1}{1 - \sin 60°}\), leaving your answer in surd form.
- A. \(1 - \sqrt{3}\)
- B. \(2 - \sqrt{3}\)
- C. \(4 - 2\sqrt{3}\)
- D. \(4 + 2\sqrt{3}\)
A particle is acted upon by forces F = (10N, 060º), P = (15N, 120º) and Q = (12N, 200º). Express the force that will keep the particle in equilibrium in the form xi + yj, where x and y are scalars.
- A. 17.55i + 13.78j
- B. 17.55j - 13.78i
- C. -17.55i + 13.78j
- D. -17.55i - 13.78j

