Waec Further Mathematics Past Questions
Question 21
The 3rd and 7th term of a Geometric Progression (GP) are 81 and 16. Find the 5th term.
- A. \(\frac{4}{729}\)
- B. \(\frac{81}{16}\)
- C. 27
- D. 36
Question 22
There are 7 boys in a class of 20. Find the number of ways of selecting 3 girls and 2 boys
- A. 1638
- B. 2730
- C. 6006
- D. 7520
Question 23
Simplify \(\frac{\sqrt{128}}{\sqrt{32} - 2\sqrt{2}}\)
- A. \(2\sqrt{2}\)
- B. \(3\sqrt{2}\)
- C. 3
- D. 4
Question 24
Evaluate \(\int_{-1}^{0} (x+1)(x-2) \mathrm{d}x\)
- A. \(\frac{7}{6}\)
- B. \(\frac{5}{6}\)
- C. \(\frac{-5}{6}\)
- D. \(\frac{-7}{6}\)
Question 25
If \(y = \frac{1+x}{1-x}\), find \(\frac{dy}{dx}\).
- A. \(\frac{2}{(1-x)^{2}}\)
- B. \(\frac{-2}{(1-x)^{2}}\)
- C. \(\frac{-1}{\sqrt{1-x}}\)
- D. \(\frac{1}{\sqrt{1-x}}\)
