How good are you with figures and formulas? Find out with these Mathematics past questions and answers. This Test is useful for both job aptitude test candidates and students preparing for JAMB, WAEC, NECO or Post UTME.
Evaluate \((111_{two})^2\) and leave your answer in base 2
\(111001_{two}\)
\(110001_{two}\)
\(101001_{two}\)
\(10010_{two}\)
Correct answer is B
\((111_{two})^{2}=(111_{two})(111_{two})\\
=1 \times 2^{2}+1\times2^{1}+1\times 2^{0}=4+2+1=7_{_{ten}}\\
(111_{two})^{2}=7\times 7=49\\
\begin{matrix}
2 & 49\\
2 & 24\hspace{1mm}R\hspace{1mm}1\\
2 & 12\hspace{1mm}R\hspace{1mm}0\\
2 & 6\hspace{1mm}R\hspace{1mm}0\\
2 & 3\hspace{1mm}R\hspace{1mm}0\\
2 & 1\hspace{1mm}R\hspace{1mm}1\\
& 0\hspace{1mm}R\hspace{1mm}1\hspace{1mm}\uparrow
\end{matrix} \\
=110001_{2}\)
|PO|=|RO|
PQR is an equilateral triangle
PQRX is a parallelogram
There are two lines of symmetry
Correct answer is B
No explanation has been provided for this answer.
40o
50o
55o
75o
Correct answer is C
Reflex + ∠OML + ∠ONL + ∠NLM = 360
280o + 10o + 15o + x = 360o => 305o + xo = 360o
x = 360o - 305o = 55o
The monthly salary of a man increased from N2,700 to N3,200. Find the percentage increase
10%
15%
15.6%
18.5%
Correct answer is D
\(\% increase = \frac{Increase}{initial\hspace{1mm} salary}\times 100\%\\
Increase=N3,200 - N2,700 = N500\\
Initial \hspace{1mm} salary=N2,700.00=\frac{N500}{N2,700}\times 100\% = 18.5\%\)
Ladi sold a car for N84,000 at a loss of 4%. How much did ladi buy the car?
80,500
80,640
87,360
87,500
Correct answer is C
p>The car was sold at 96% ---- N84,000.00
The price of the car is 100% ---- ?
\(\frac{4}{100} \times \frac{84,000}{1}\);
= 3360
Car's price = 3360 + 84000
= 87360