Mathematics WAEC past questions and answers

Mathematics WAEC past questions and answers

Question: Solve the system of equations:

\begin{align*} 3x + 2y &= 8 \\ 2x - y &= 3 \end{align*}

3x+2y

2x−y

​ 

  

=8

=3

​ 

 

A) x = 2, y = 1x=2,y=1

B) x = 3, y = 2x=3,y=2

C) x = 1, y = 2x=1,y=2

D) x = 2, y = 3x=2,y=3

Answer: A) x = 2, y = 1x=2,y=1

Question: If a cube has a side length of 6 units, what is its volume?

A) 216

B) 126

C) 36

D) 72

Answer: A) 216

Question: Find the value of \sin 60^\circ + \cos 30^\circsin60 

∘

 +cos30 

∘

 .

A) \frac{\sqrt{3}}{2} 

2

3

​ 

 

​ 

 

B) \frac{3}{2} 

2

3

​ 

 

C) \frac{1}{2} 

2

1

​ 

 

D) \frac{2}{\sqrt{3}} 

3

​ 

 

2

​ 

 

Answer: C) \frac{1}{2} 

2

1

​ 

 

Question: What is the probability of rolling an even number on a six-sided die?

A) \frac{1}{2} 

2

1

​ 

 

B) \frac{1}{3} 

3

1

​ 

 

C) \frac{1}{6} 

6

1

​ 

 

D) \frac{1}{4} 

4

1

​ 

 

Answer: A) \frac{1}{2} 

2

1

​ 

 

Question: Solve for xx in the equation e^{2x} = 16e 

2x

 =16.

A) \ln 2ln2

B) \ln 4ln4

C) \ln 8ln8

D) \ln 16ln16

Answer: B) \ln 4ln4