Mathematics 2006 Waec Past Questions and Answers

Question 16 :

• WAEC 2006

Given that (2x - 1)(x + 5) = 2x² - mx - 5, what is the value of m

A. 11
B. 5
C. -9
D. -10

Question 17 :

• WAEC 2006

What is the place value of 9 in the number 3.0492?

A. \(\frac{9}{10000}\)
B. \(\frac{9}{1000}\)
C. \(\frac{9}{100}\)
D. \(\frac{9}{10}\)

Question 18 :

• WAEC 2006

If the simple interest on a sum of money invested at 3% per annum for 2\(\frac{1}{2}\) years is N123, find the principal.

A. N676.50
B. N820
C. N1,640
D. N4,920

Question 19 :

• WAEC 2006

A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?

A. N16,200
B. N1,4,200
C. 12,000
D. 8000.

Question 20 :

• WAEC 2006

If 2x + y = 10, and y \(\neq\) 0, which of the following is not a possible value of x?

A. 4
B. 5
C. 8
D. 10