Mathematics Past Questions And Answers
Three red balls, five green balls, and a number of blue balls are put together in a sack. One ball is picked at random from the sack. If the probability of picking a red ball is \(\frac{1}{6}\) find;
(a) The number of blue balls in the sack
(b) the probability of picking a green ball
View Discussion (0)WAEC 2019 THEORYThe quantity y is partly constant and partly varies inversely as the square of x.
(a) Write down the relationship between x and y.
(b) When x = 1, y = 11 and when x = 2, y = 5, find the value of y when x = 4.
View Discussion (0)WAEC 1995 THEORYIf (-3, -4) is a point on the line y = mx + 2 find the value of m.
- A. -2
- B. \(\frac{7}{4}\)
- C. 2
- D. \(\frac{8}{3}\)
Find the mean of: {2,2,4,4,6,6,8,8,12,12,7,6,5,4,3,3,3,3,3,33,41}
- A. 8.33
- B. 8.31
- C. 8.332
- D. 8.3
Given \(\begin{vmatrix} 2 & -3 \\ 1 & 4 \end{vmatrix} \begin{vmatrix} -6 \\ k \end{vmatrix} \begin{vmatrix} 3 \\ -26 \end{vmatrix} = 15\). Solve for k.
- A. -8
- B. -5
- C. -4
- D. -3
Evaluate \(\frac{\left(\frac{3}{8}\div\frac{1}{2}+\frac{1}{2}\right)}{\left(\frac{1}{8}\times\frac{2}{3}+\frac{1}{3}\right)}\)
- A. 1/4
- B. 1/3
- C. 1/2
- D. 3
In the diagram, ∠ QPR = 90o. If q2 = 25 - r2. Find the value of p
- A. 3
- B. 4
- C. 5
- D. 6
Find the compound interest (CI) on N15,700 for 2 years at 8% per annum compounded annually.
- A. N6,212.48
- B. N2,834.48
- C. N18,312.48
- D. N2,612.48
If 15 cans of food are needed for seven adults for two days, the number of cans needed to feed four adults for seven days is?
- A) 25
- B) 15
- C) 20
- D) 30
A solid metal cube of side 3 cm is placed in a rectangular tank of dimension 3, 4 and 5 cm. What volume of water can the tank now hold
- A. 48 cm3
- B. 33 cm3
- C. 60 cm3
- D. 27 cm3