Mathematics Past Questions And Answers
Which is the odd number out? 462 683 385 198
- A. 198
- B. 385
- C. 462
- D. 683
Evaluate \(\int^{1}_{0}\)(3 - 2x)dx
- A. 33
- B. 5
- C. 2
- D. 6
Adu's scores in five subjects in an examination are 85, 84, 83, 86 and 87. Calculate the standard deviation.
- A. 2.0
- B. 1.4
- C. 1.8
- D. 1.6
Find the value of x for which 6\(\sqrt{4x^2 + 1}\) = 13x, where x > 0
- A. \(\frac{6}{5}\)
- B. \(\frac{25}{24}\)
- C. \(\frac{24}{25}\)
- D. \(\frac{5}{6}\)
Find the axis of symmetry of the curve \(y = x^{2} - 4x - 12\).
- A. x = -2
- B. y = -2
- C. x = 2
- D. y = 2
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In the diagram, ASRTB represents a piece of string passing over a pulley of radius 10cm in a vertical plane. O is the centre of the pulley and AMB is a horizontal straight line touching the pulley at M. Angle SAB = 90° and angle TBA = 60°.
(a) Calculate (i) the obtuse angle SOT ; (ii) arc SRT ; (iii) |BT|
(b) Find, correct to the nearest cm, the length of the string. (Take \(\pi = \frac{22}{7}\)).
View Discussion (0)WAEC 1998 THEORY.jpg)
An exponential sequence (G.P.) is given by 8√2, 16√2, 32√2, ... . Find the n\(^{th}\) term of the sequence
- A. \(8\sqrt2^n\)
- B. \(2^{(n+2)}\sqrt2\)
- C. \(\sqrt2^{(n+3)}\)
- D. \(8n\sqrt2\)
If log520 = x, find x
- A. 1.761
- B. 1.354
- C. 1.861
- D. 2.549
A student pilot was required to fly to an airport and then return as part of his flight training. The average speed to the airport was 120 km/h, and the average speed returning was 150 km/h. If the total flight time was 3 hours, calculate the distance between the two airports.
- A. 270 km
- B. 200 km
- C. 360 km
- D. 450 km
If events A and B are independent and \(P(A) = \frac{7}{12}\) and \(P(A \cap B) = \frac{1}{4}\), find P(B).
- A. \(\frac{3}{7}\)
- B. \(\frac{4}{7}\)
- C. \(\frac{5}{7}\)
- D. \(\frac{6}{7}\)