Mathematics Past Questions And Answers
Find the median: a=[?5,?1?1,0,?2,?9]
- A. ?3/2
- B. ?1/2
- C. {There is no median.}
- D. ?1
Find the third term in the expansion of \((a - b)^{6}\) in ascending powers of b.
- A. \(-15a^{4}b^{2}\)
- B. \(15a^{4}b^{2}\)
- C. \(-15a^{3}b^{3}\)
- D. \(15a^{3}b^{3}\)
Find the range of values of x which satisfy the inequality \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{x}{4}\)< 1
- A. x< \(\frac{12}{13}\)
- B. x< 13
- C. x< 9
- D. \(\frac{13}{12}\)
\(\begin{array}{c|c}
x & 0 & 1\frac{1}{4} & 2 & 4\\
\hline
y & 3 & 5\frac{1}{2} & &
\end{array}\)
The table given shows some values for a linear graph. Find the gradient of the line
- A. 1
- B. 2
- C. 3
- D. 4
Solve x2 − 2x − 3 = 0
- A. x = 2 or 1
- B. x = 3 or -1
- C. x = 1 or 0
- D. x = 1 or 2
The table shows the distribution of masks obtained by students in an examination.
| Marks | 50 - 54 | 55 - 59 | 60 - 64 | 65 - 69 | 70 - 74 | 75 - 79 | 80 - 84 | 85 - 89 |
| Frequency | 5 | 15 | 20 | 28 | 12 | 9 | 7 | 4 |
Using an assumed mean of 67, calculate, correct to one decimal place. the
a) Mean
b) Standard deviation of the distribution
View Discussion (0)WAEC 2019 THEORYEvaluate \(\int^{1}_{-2}(x-1)^{2}dx\)
- A. −10/3
- B. 7
- C. 9
- D. 11
Solve the inequality: 3(x + 1) \(\leq\) 5(x + 2) + 15
- A. x \(\geq\) -14
- B. x \(\leq\) - 14
- C. x \(\geq\) -11
- D. x \(\leq\) - 11
A ladder 11m long leans against a vertical wall at an angle of 75\(^o\) to the ground. The ladder is the pushed 0.2 m up the wall.
(a) Illustrate the information in a diagram.
(b) Find correct to the nearest whole number, the:
(i) new angle which the ladder makes with the ground:
(ii) distance the foot of the ladder has moved from its original position.
View Discussion (0)WAEC 2019 THEORY.png)
A box contains 5 blue balls, 3 red balls and 2 white balls. Two balls are selected from the box with replacement. Find the probability of obtaining two blue or two red balls
- A. 17/50
- B. 3/25
- C. 1/50
- D. 3/250