Waec Further Mathematics Past Questions and Answers

Question 6:

• WAEC 2018

The marks scored by 4 students in Mathematics and Physics are ranked as shown in the table below

Mathematics	3	4	2	1
Physics	4	3	1	2

Calculate the Spearmann's rank correlation coefficient.

A. 0.2
B. 0.5
C. 0.6
D. 0.7

Question 7:

• WAEC 2018

Given that $a=i-3j$ and $b=-2i+5j$ and $c=3i-j$, calculate $|a-b+c|$.

A. $\sqrt{13}$
B. $3\sqrt{13}$
C. $6\sqrt{13}$
D. $9\sqrt{13}$

Question 8:

• WAEC 2018

What is the probability of obtaining a head and a six when a fair coin and and a die are tossed together?

A. $\frac{1}{12}$
B. $\frac{1}{3}$
C. $\frac{1}{2}$
D. $\frac{2}{3}$

Question 9:

• WAEC 2018

If $\overrightarrow{OX}=\left(\begin{array}{c}-7\\ 6\end{array}\right)$ and $\overrightarrow{OY}=\left(\begin{array}{c}16\\ -11\end{array}\right)$, find $\overrightarrow{YX}$.

A. $\left(\begin{array}{c}9\\ -5\end{array}\right)$
B. $\left(\begin{array}{c}-23\\ -5\end{array}\right)$
C. $\left(\begin{array}{c}9\\ 17\end{array}\right)$
D. $\left(\begin{array}{c}-23\\ 17\end{array}\right)$

Question 10:

• WAEC 2018

A body of mass 28g, initially at rest is acted upon by a force, F Newtons. If it attains a velocity of $5.4m{s}^{-1}$ in 18 seconds, find the value of F.

A. 0.0082N
B. 0.0084N
C. 0.082N
D. 0.084N