Mathematics Past Questions And Answers
In a cumulative frequency graph, the lower quartile is 18 years while the 60th percentile is 48 years. What percentage of the distribution is at most 18 years or greater than 48 years?
- A. 15%
- B. 35%
- C. 65%
- D. 85%
Find thefifth term in the binomial expansion of \((q + x)^7\).
- A. \(21q^2x^5\)
- B. \(21q^4x^3\)
- C. \(35q^3x^4\)
- D. \(35q^5x^2\)
If \(\overrightarrow{OX} = \begin{pmatrix} -7 \\ 6 \end{pmatrix}\) and \(\overrightarrow{OY} = \begin{pmatrix} 16 \\ -11 \end{pmatrix}\), find \(\overrightarrow{YX}\).
- A. \(\begin{pmatrix} 9 \\ -5 \end{pmatrix}\)
- B. \(\begin{pmatrix} -23 \\ -5 \end{pmatrix}\)
- C. \(\begin{pmatrix} 9 \\ 17 \end{pmatrix}\)
- D. \(\begin{pmatrix} -23 \\ 17 \end{pmatrix}\)
Evaluate; \(\frac{\log_3 9 - \log_2 8}{\log_3 9}\)
- A. -\(\frac{1}{3}\)
- B. \(\frac{1}{2}\)
- C. \(\frac{1}{3}\)
- D. -\(\frac{1}{2}\)
Solve (\(\frac{1}{9}\))\(^{x + 2}\) = 243\(^{x - 2}\)
- A. \(\frac{7}{5}\)
- B. \(\frac{6}{7}\)
- C. \(\frac{-7}{6}\)
- D. \(\frac{-6}{7}\)
If Ayuba bought 5 oranges for N7, how many oranges of the same type can he buy for N49?
- a. 15 oranges
- b. 35 oranges
- c. 25 oranges
- d. 30 oranges
(a) Solve \(\frac{1}{81^{(x - 2)}} = 27^{(1 - x)}\)
(b) Simplify \(\frac{5}{\sqrt{7} - \sqrt{3}} + \frac{1}{\sqrt{7} + \sqrt{3}}\), leaving your answer in surd form.
View Discussion (0)WAEC 2004 THEORYFactorize 5y2 + 2ay - 3a2
- A. (a - y)(5y - 3a)
- B. (y - a)(5y - 3a)
- C. (y - a)(5y + 3a)
- D. (y + a)(5y - 3a)
The bar chart shows the distribution of marks scored by 60 pupils in a test in which the maximum score was 10. If the pass mark was 5, what percentage of the pupils failed the test?
- A. 59.4%
- B. 50.0%
- C. 41.7%
- D. 25.0%
Find the value of k if \(\frac{5 + 2r}{(r + 1)(r - 2)}\) expressed in partial fraction is \(\frac{k}{r - 2}\) + \(\frac{L}{r + 1}\) where K and L are constants
- A. 3
- B. 2
- C. 1
- D. -1