Mathematics Past Questions And Answers
Forces 50N and 80N act on a body as shown in the diagram. Find, correct to the nearest whole number, the horizontal component of the resultant force.
- A. 13N
- B. 43N
- C. 57N
- D. 95N
Solve (\(\frac{27}{125}\))-\(\frac{1}{3}\) x (\(\frac{4}{9}\))\(\frac{1}{2}\)
- A. \(\frac{10}{9}\)
- B. \(\frac{9}{10}\)
- C. \(\frac{2}{5}\)
- D. \(\frac{12}{125}\)
Simplify log\(_7\) 8 - log\(_7\) 2 + log\(_7\) 4.
- A. 0
- B. \(2log_7 2\)
- C. \(3log_7 2\)
- D. \(4log_7 2\)
What is Roman numeral of 1000?
- (a) D
- (b) L
- (c) C
- (d) M
The function \(f : F \to R\)
= \(f(x) = \begin{cases} 3x + 2 : x > 4 \\ 3x - 2 : x = 4 \\ 5x - 3 : x < 4 \end{cases}\). Find f(4) - f(-3).
- A. 28
- B. 26
- C. -26
- D. -28
In a class of 40 students, 32 offer mathematics, 24 offer physics and 4 offer neither mathematics nor physics. How many offer both mathematics and physics?
- A. 4
- B. 8
- C. 16
- D. 20
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. \(\frac{1}{\sqrt{1-x}}\)
A die was rolled a number of times. The outcomes are as shown in the table
| Number | 1 | 2 | 3 | 4 | 5 | 6 |
| Outcomes | 32 | m | 25 | 40 | 28 | 45 |
If the probability of obtaining 2 is 0.15, find the:
(a) value of m;
(b) number of times the die was rolled;
(c) probability of obtaining an even number.
View Discussion (0)WAEC 2020 THEORY0, 3, 8, 15, 24, ?
- (a) 36
- (b) 30
- (c) 35
- (d) 31
Given that \(m = 3i - 2j ; n = 2i - 3j\) and \(p = -i + 6j\), find \(4m + 2n - 3p\).
View Discussion (0)WAEC 2018 THEORY