Waec Further Mathematics 2011 Past Questions and Answers

Question 26:

• WAEC 2011

The probability that Kofi and Ama hit a target in a shooting competition are \(\frac{1}{6}\) and \(\frac{1}{9}\) respectively. What is the probability that only one of them hit the target?

A. \(\frac{1}{54}\)
B. \(\frac{13}{54}\)
C. \(\frac{20}{27}\)
D. \(\frac{41}{54}\)

Question 27:

• WAEC 2011

In how many ways can 3 prefects be chosen out of 8 prefects?

A. 6
B. 24
C. 56
D. 336

Question 28:

• WAEC 2011

Find the standard deviation of the numbers 3,6,2,1,7 and 5.

A. 2.00
B. 2.16
C. 2.50
D. 2.56

Question 29:

• WAEC 2011

Marks	5-7	8-10	11-13	14-16	17-19	20-22
No of students	4	7	26	41	14	8

The table above shows the distribution of marks of students in a class. Find the upper class boundary of the modal class.

A. 13.5
B. 16
C. 16.5
D. 22.5

Question 30:

• WAEC 2011

If \(^{3x}C_{2} = 15\), find the value of x?

A. 2
B. 4
C. 5
D. 6