Waec Mathematics Past Questions and Answers

Question 876:

• WAEC 2003

Evaluate \((111_{two})^2 - (101_{two})^2\)

A. 10_two
B. 100_two
C. 1100_two
D. 11000_two

Question 877:

• WAEC 2003

Given that x ≅ 0.0102 correct to 3 significant figures, which of the following cannot be the actual value of x?

A. 0.01014
B. 0.01021
C. 0.01015
D. 0.01016

Question 878:

• WAEC 2003

If \(\frac{3^{(1-n)}}{9^{-2n}}=\frac{1}{9}\) find n

A. \(-\frac{3}{2}\)
B. \(\frac{1}{3}\)
C. -1
D. -3

Question 879:

• WAEC 2003

Which of the following is/are not the interior angle(s) of a regular polygon? I.108° II. 116° III. 120°

A. I only
B. II only
C. III only
D. I and III only

Question 880:

• WAEC 2003

In a ∆ XYZ, /YZ/ = 6cm YXZ = 60^o and XYZ is a right angle. Calculate /XZ/in cm, leaving your answer in surd form

A. 2√3
B. 4√3
C. 6√3
D. 12√3