Mathematics Past Questions And Answers
Two fair die are thrown. M is the event described by "The sum of the scores is 10" and N is the event described by "The difference between the scores is 3".
(a) Write out the elements of M and N.
(b) Find the probability of M or N.
(c) Are M and N mutually exclusive? Give reasons.
View Discussion (0)WAEC 2010 THEORY(a) Given that \(\cos x = 0.7431, 0° < x < 90°\), use tables to find the values of : (i) \(2 \sin x\) ; (ii) \(\tan \frac{x}{2}\).
(b) The interior angles of a pentagon are in ratio 2 : 3 : 4 : 4 : 5. Find the value of the largest angle.
View Discussion (0)WAEC 2000 THEORYThe position vectors of A and B are (2i + j) and (-i + 4j) respectively; find |AB|.
- A. \(3\sqrt{2}\)
- B. \(\sqrt{34}\)
- C. \(\sqrt{34}\)
- D. \(9\sqrt{2}\)
At what value of x is the function x2 + x + 1 minimum?
- A. -1
- B. −1/2
- C. 1/2
- D. 1
If the radius of the parallel of latitude 30°N is equal to the radius of the parallel of latitude θ°S, what is the value of θ?
- A. 75°
- B. 60°
- C. 45°
- D. 30°
Find the mean of the following set: 41,38,27,42,35,38,44
- A. 53
- B. 37.9
- C. 31.7
- D. 34.9
There is a boat with a ladder attached to it and the ladder is eight metres tall if the water rises four metres how much of the ladder will be on to of the water?
- A. 12 metres
- B. 48 metres
- C. 8 metres
- D. 10 metres
(a) A plane flies due East from A(lat. 53°N, long. 25°E) to a point B(lat. 53°N, long. 85°E) at an average speed of 400 km/h. The plane then flies South from B to a point C 2000km away. Calculate, correct to the nearest whole number :
(a) the distance between A and B.
(b) the time the plane takes to reach point B ;
(c) the latitude of C.
[Take radius of the earth = 6400km; \(\pi = \frac{22}{7}\)].
View Discussion (0)WAEC 2005 THEORY_LI.jpg)
Without using table, solve the equation 8x-2 = \(\frac{2}{25}\)
- A. 4
- B. 6
- C. 8
- D. 10
What is 7/8 of the profit of a contractor in a year, if half of the profit made is N2880.72?
- A. N5040.26
- B. N5041.26
- C. N2520.63
- D. N5041.36