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.
Solve the inequality 2x + 3 < 5x
\(x>1\)
\(x<\frac{3}{7}\)
\(x>\frac{3}{7}\)
\(x>-1\)
Correct answer is A
2x + 3 < 5x
-3x < -3
X > 1
\(\frac{7}{25}\)
\(\frac{41}{50}\)
\(\frac{1}{2}\)
1
Correct answer is A
P(man picked at random wears size 9 shoes) = \(\frac{28}{100}\)
= \(\frac{7}{25}\)
The root of a quadratic equation in x, are -m and 2n. Find the equation
\(x^2 + x(m - 2n)-2mn=0\)
\(x^2 - x(m - 2n)-2mn=0\)
\(x^2 - x(m - 2n)+2mn=0\)
\(x^2 + x(m - 2n)+2mn=0\)
Correct answer is A
x = -m \(\implies\) x + m = 0;
x = 2n \(\implies\) x - 2n = 0.
\(\implies (x + m)(x - 2n) = 0\)
\(x^2 + mx - 2nx - 2mn = 0\)
\(x^2 + x(m - 2n) - 2mn = 0\)
If \(x^2 +15x + 50 = ax^2 + bx + c = 0\). Which of the following statement is not true?
x = -5
x = 10
x + 10 = 0
bc = 750
Correct answer is B
\(x^2 + 15x + 50 = 0\)
\(x^2 + 5x + 10x + 50 = 0\)
\(x(x + 5) + 10(x + 5) = 0\)
\((x + 5)(x + 10) = 0\)
x + 5 = 0 or x + 10 = 0.
Comparing \(x^2 + 15x + 50\) with \(ax^2 + bx + c\), b = 15 and c = 50.
\(\therefore\) bc = 750.
Which of the following pairs of inequalities is represented on the number line?
\(x<-2 and x\ge1\)
\(x\ge -2 and x>1\)
\(x\le -2 and x\ge1\)
\(x< -2 and x>1\)
Correct answer is C
No explanation has been provided for this answer.