Waec Mathematics Past Questions For Year 2000
Question 11
The probabilities that Kodjo and Adoga pass an examination are \(\frac{3}{4}\) and \(\frac{3}{5}\) respectively. Find the probability of both boys failing the examination
- A. \(\frac{1}{10}\)
- B. \(\frac{3}{10}\)
- C. \(\frac{9}{20}\)
- D. \(\frac{2}{3}\)
Question 12
Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4, 2
- A. 1.5
- B. 1.7
- C. 1.8
- D. 1.9
Question 13
The bar chart shows the distribution of marks scored by a group of students in a test. Use the chart to answer the question below
How many students took the test?
- A. 38
- B. 32
- C. 15
- D. 11
Question 14
The bar chart shows the distribution of marks scored by a group of students in a test. Use the chart to answer the question below
How many students scored 4 marks and above?
- A. 15
- B. 11
- C. 10
- D. 17
Question 15
Given that \(x = -\frac{1}{2}and \hspace{1mm} y = 4 \hspace{1mm} evaluate \hspace{1mm} 3x^2y+xy^2\)
- A. -5
- B. -1
- C. 4
- D. 11
