The histogram above shows the ages of victims of a pollution. How many people were involved in the pollution?
- A. 20
- B. 21
- C. 15
- D. 18
In the diagram PQR is a straight line and PS is a tangent to the circle < QRS with |PS| = |SR| and < SPR = 40°. Find PSQ
- A. 20o
- B. 40o
- C. 10o
- D. 30o
Triangle OPQ is the solution of the inequalities
- A. x - 1 < 0, y + \(\geq\) 0, y - x \(\geq\) 0
- B. x + 1 \(\leq\) 0, y + x \(\geq\) 0, y - x \(\leq\) 0
- C. x - 1 \(\geq\) 0, y - x \(\geq\) 0, y + x \(\geq\) 0
- D. y + x \(\geq\) 0, y - x \(\leq\) 0
The histogram above shows the ages of the victims of a pollution. How many people were involved in the pollution?
- A. 15
- B. 18
- C. 20
- D. 21
A triangle has vertices P(-1,6), Q(-3, -4) and R(1, -4).Find the midpoint of PQ and QR respectively.
- A. (0,-2) and (-1, -4)
- B. (-1,0) and (-1,-1)
- C. (-2,1) and (0,1)
- D. (-2,1) and (-1,-4)
In the diagram above, PQR is a straight line and PS is a tangent to the circle QRS with /PS/ = /SR/ and ∠SPR = 40°. Find ∠PSQ
- A. 40o
- B. 30o
- C. 20o
- D. 10o
XYZ is a circle with center O and a radius 7cm. Find the area of the shaded region.
- A. 84cm2
- B. 77cm2
- C. 38cm2
- D. 14cm2
In the diagram above, PQ is parallel to RS. What is the value of α + β + γ?
- A. 360o
- B. 200o
- C. 180o
- D. 90o
Find the equation of the locus of a point P(x,y) which is equidistant from Q(0,0) and R(2,1).
- A. 4x + 2y = 5
- B. 4x - 2y = 5
- C. 2x + 2y = 5
- D. 2x + y = 5
An arc of a circle subtends an angle of 30° on the circumference of a circle of radius 21cm. Find the length of the arc.
- A. 11cm
- B. 22cm
- C. 44cm
- D. 66cm
An aeroplane flies due north from airport P to Q and then flies due east R. If Q is equidistant from P and R, find the bearing of P and R
- A. 90o
- B. 135o
- C. 225o
- D. 270o
The result of tossing a fair die 120 times is summarized above. Find the value of x
- A. 19
- B. 20
- C. 21
- D. 22
A bag contains 5 blacks balls and 3 red balls. Two balls are picked at random without replacement. What is the probability that a black and red balls are picked?
- A. 15/28
- B. 13/28
- C. 5/14
- D. 3/14
Find the number of committees of three that can be formed consisting of two men and one woman from four men and three women
- A. 3
- B. 6
- C. 18
- D. 24
If \(^{n}P_{3} – 6(^{n}C_{4}) = 0\), find the value of n.
- A. 5
- B. 6
- C. 7
- D. 8
On a pie chart, there are four sectors of which three angles are 45°, 90° and 135°. If the smallest sector represents N28.00, how much is the largest sector?
- A. N96.00
- B. N84.00
- C. N48.00
- D. N42.00
The range of 4, 3, 11, 9, 6, 15, 19, 23, 27, 24,21 and 16 is
- A. 16
- B. 21
- C. 23
- D. 24
By how much is the mean of 30, 56, 31, 55, 43 and 44 less than the median?
- A. 0.75
- B. 0.50
- C. 0.33
- D. 0.17
If y = 3 sin(-4x), dy/dx is
- A. 12x cos (4x)
- B. -12x cos (-4x)
- C. -12 cos (-4x)
- D. 12 sin (-4x)