Waec Mathematics Past Questions and Answers

Question 1091:

• WAEC 2007

Evaluate \((111_{two})^2\) and leave your answer in base 2

A. \(111001_{two}\)
B. \(110001_{two}\)
C. \(101001_{two}\)
D. \(10010_{two}\)

Question 1092:

• WAEC 2007

Find the LCM of \(2^{3}\times 3\times 5^{2}, 2\times 3^{2}\times 5 \hspace{1mm}and \hspace{1mm}2^{2}\times 3^{2}\times 5\)

A. \(2^{2}\times 3^{3}\times 5^{2}\)
B. \(2^{3}\times 3^{23}\times 5\)
C. \(2^{2}\times 3^{2}\times 5^{2}\)
D. \(2^{3}\times 3^{3}\times 5^{2}\)

Question 1093:

• WAEC 2007

Simplify \((0.3\times 10^{5})\div (0.4\times 10^{7})\)leaving your answer in standard form

A. \(7.5\times 10^{-4}\)
B. \(7.5\times 10^{-3}\)
C. \(7.5\times 10^{-2}\)
D. \(7.5\times 10^{-1}\)

Question 1094:

• WAEC 2007

If \(p\propto \frac{1}{q}\), which of the following is true?

A. \(\propto p^{2}\)
B. \(p\propto \frac{1}{q^{2}}\)
C. \(q\propto \sqrt{p}\)
D. \(q\propto \frac{1}{p}\)

Question 1095:

• WAEC 2007

Simplify \(3\sqrt{45}-12\sqrt{5}+16\sqrt{20}\)leaving your answer in surd form

A. \(29\sqrt{5}\)
B. \(14\sqrt{15}\)
C. \(12\sqrt{15}\)
D. \(11\sqrt{5}\)