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.
A fair coin is tossed three times. Find the probability of getting two heads and one tail.
\(\frac{1}{2}\)
\(\frac{3}{8}\)
\(\frac{1}{4}\)
\(\frac{1}{8}\)
Correct answer is B
Pr(head) = \(\frac{1}{2}\), Pr(tail) = \(\frac{1}{2}\):Pr(2 heads)
= \(\frac{1}{2}\) x \(\frac{1}{2}\) = \(\frac{1}{4}\)
Pr(2 heads and tail) 3 times
= (\(\frac{1}{4}\) x \(\frac{1}{2}\)) x 3
= \(\frac{3}{8}\)
a straight line joining A and P
the perpendicular bisector of AP
a circle with centre A
the triangle with centre P
Correct answer is C
No explanation has been provided for this answer.
Given that y = 1 - \(\frac{2x}{4x - 3}\), find the value of x for which y is undefined
3
\(\frac{3}{4}\)
\(\frac{-3}{4}\)
-3
Correct answer is B
for undefined expression, the denomination is zero 4x - 3 = 0
4x = 3; x = \(\frac{3}{4}\)
Simplify \(\frac{x - 4}{4} - \frac{x - 3}{6}\)
\(\frac{x - 18}{12}\)
\(\frac{x - 6}{12}\)
\(\frac{x - 18}{24}\)
\(\frac{x - 6}{24}\)
Correct answer is B
\(\frac{x - 4}{4} - \frac{x - 3}{6}\) = \(\frac{3(x - 4) - 2(x - 3)}{12}\)
= \(\frac{3x -12 - 2x + 6}{12}\)
= \(\frac{3x - 2x - 12 + 6}{12}\)
= \(\frac{x - 6}{12}\)
25
\(\frac{1}{5}\)
1
\(\frac{1}{25}\)
Correct answer is C
\(\frac{25 \frac{2}{3} \div 25 \frac{1}{6}}{( \frac{1}{5})^{-\frac{7}{6}} \times ( \frac{1}{5})^{\frac{1}{6}}}\) = \(\frac{25^{4 - \frac{1}{6}}}{(\frac{1}{5})^{-7 + \frac{1}{6}}}\)
= \(\frac{25^{\frac{1}{2}}}{(\frac{1}{5})^{-1}}\)
= \(\frac{(5^2)^{\frac{1}{2}}}{(5^{-1})^{-1}}\)
= \(\frac{5}{5}\)
= 1