Waec Further Mathematics Past Questions and Answers

Question 71:

• WAEC 2017

Find the coefficient of \(x^{4}\) in the expansion of \((1-2x)^{6}\).

A. -320
B. -240
C. 240
D. 320

Question 72:

• WAEC 2017

Find the 21st term of the Arithmetic Progression (A.P.): -4, -1.5, 1, 3.5,...

A. 43.5
B. 46
C. 48.5
D. 51

Question 73:

• WAEC 2017

If \(log_{y}\frac{1}{8}\) = 3, find the value of y.

A. -2
B. -\(\frac{1}{2}\)
C. \(\frac{1}{2}\)
D. 2

Question 74:

• WAEC 2017

A binary operation \(\Delta\) is defined on the set of real numbers, R, by \(a \Delta b = \frac{a+b}{\sqrt{ab}}\), where a\(\neq\) 0, b\(\neq\) 0. Evaluate \(-3 \Delta -1\).

A. \(-4\sqrt{3}\)
B. \(\frac{-4\sqrt{3}}{3}\)
C. \(\frac{-3\sqrt{3}}{4}\)
D. \(\frac{-3\sqrt{3}}{4}\)

Question 75:

• WAEC 2017

Simplify \(\frac{1}{(1-\sqrt{3})^{2}}\)

A. \(1- \frac{1}{2}\sqrt{3}\)
B. \(1+ \frac{1}{2}\sqrt{3}\)
C. \(\sqrt{3}\)
D. \(1+\sqrt{3}\)