Post Utme Mathematics Past Questions and Answers

Question 246:

Simplify \(\frac{0.045 \times 2.5}{0.5}\) correct to 2 significant figures

A. \(0.06 \quad\)
B. \(0.056 \quad\)
C. \(0.56 \quad\)
D. \(0.65\)

Question 247:

Simplify \(\frac{2 \frac{2}{3} \times 1 \frac{1}{2}}{3 \frac{1}{2}}\)

A. \(1 \frac{1}{7}\)
B. \(1 \frac{1}{6}\)
C. \(\frac{2}{3}\)
D. \(\frac{1}{6}\)

Question 248:

Factorize \(s x-k y-5 y+k x\)

A. \((s-k)(x-y)\)
B. \((s+k)(y-x)\)
C. \((s-k)(y-x)\)
D. \((\mathrm{so}+\mathrm{k})(x-\mathrm{y})\)

Question 249:

The ratio of the price of a loaf of bread to the price of a packet of sugar in 1975 was \(r: t\), in 1980 the price of a loaf went up by \(25 \%\) and that of a packet of sugar by \(10 \%\). Their new ratio is now

A. 40 r: 50 t
B. 44 r: 50 t
C. 50 r: 44 t
D. 55 r: 44 t
E. 44 r: 55 t

Question 250:

Find a two-digit number such that three times the tens digit is 2 less than twice the units digit, and twice the number is 20 greater than the number obtained by reversing the digits.

A. 24
B. 42
C. 74
D. 47
E. 72