Mathematics Past Questions And Answers
Given that sin \(\theta\) = -0.9063, where O \(\leq\) \(\theta\) \(\leq\) 270°, find \(\theta\)
- A. 65°
- B. 115°
- C. 145°
- D. 245°
The nth term of the progression \(\frac{4}{2}\), \(\frac{7}{3}\), \(\frac{10}{4}\), \(\frac{13}{5}\) is ..
- A. \(\frac{1 - 3n}{n + 1}\)
- B. \(\frac{3n + 1}{n + 1}\)
- C. \(\frac{3n + 1}{n - 1}\)
- D. \(\frac{3n - 1}{n + 1}\)
Karen wants to get an average of 92% at the end of the semester in her class. She has 1 test left to take before the semester is over to raise her average. If she recieved an 88%, 87%, 95%, and 93% on her tests what does she need to recieve on her last test to obtain the 92% average?
- A. 95%
- B. 93%
- C. 97%
- D. 100%
Fifty boxes each of 50 bolts were inspected for the number which were defective. The following was the result
\(\begin{array}{c|c} \text{No. defective per box} & 4 & 5 & 6 & 7 & 8 & 9 \\ \hline \text{No. of boxes} & 2 & 7 & 17 & 10 & 8 & 6\end{array}\)
The mean and the median of the distribution are respectively
- A. 6.7, 6
- B. 7.6, 5
- C. 5.7, 87
- D. 34, 6
Two bodies of masses 8 kg and 5 kg travelling in the same direction with speeds x m/s and 2 m/s respectively collide. If after collision, they move together with a speed of 3.85 m/s, find, correct to the nearest whole number, the value of x.
- A. 2
- B. 5
- C. 8
- D. 13
Simplify 3 \(^{n − 1}\) × \(\frac{27^{n + 1}}{81^n}\)
- A. 32n
- B. 9
- C. 3n
- D. 3n+1
Solve the equation \(\frac{m}{3} + \frac{1}{2} = \frac{3}{4} + \frac{m}{4}\)
- A. -3
- B. -2
- C. 2
- D. 3
(a) Solve the equation, correct to two decimal places \(2x^{2} + 7x - 11 = 0\)
(b) Using the substitution \(P = \frac{1}{x}; Q = \frac{1}{y}\), solve the simultaneous equations : \(\frac{2}{x} + \frac{1}{y} = 3 ; \frac{1}{x} - \frac{5}{y} = 7\)
View Discussion (0)WAEC 1991 THEORYFind the value of k if \(\frac{k}{\sqrt{3} + \sqrt{2}}\) = k\(\sqrt{3 - 2}\)
- A. 3
- B. 2
- C. √3
- D. √2
Add all the even numbers from 1 to 8.
- A. 19
- B. 23
- C. 20
- D. 16