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.
What value of p will make (x\(^2\) - 4x + p) a perfect square?
-2
16
4
-8
Correct answer is C
(x\(^2\) - 4x + p)
Use the coefficient of the middle variable(-4x)
= (\(\frac{-4}{2}\))\(^2\)
= (-2)\(^2\)
= 4
If Stephen is good at Mathematics, then he is intelligent
If Stephen is not good at Mathematics, then he is not intelligent
If Stephen is not intelligent, then he is not good at Mathematics
If Stephen is not good at Mathematics, then he is intelligent
Correct answer is B
If p implies (→) q
then not (~) q → not (~) p
Option B
$(2x-8)
$(2x+8)
$(2x-2)
$(2x+2)
Correct answer is D
Mary(m), Ben(b) Jane(j) m = b +3 m = j - 5 where m = x b = x - 3 and j = x + 5 b+ j → x - 3 + x + 5 = 2x +2 Jane and Ben have $(2x+2)
If 5x + 3y=4 and 5x-3y= 2, what is the value of (25x\(^2\) -9y\(^2\))?
20
16
2
8
Correct answer is D
5x + 3y=4
5x-3y= 2
Using elimination method
5x + 3y=4 → 5x + 3y=4
-[5x-3y= 2] → -5x +3y= -2
6y = 2
y → 1/3 and x = 3/5
solving (25x\(^2\) -9y\(^2\))
25 * [3/5]\(^2\) -9 * [1/3]\(^2\)
25 * \(\frac{9}{25}\) - 9 \(\frac{1}{9}\)
9 - 1 = 8
The length of a piece of stick is 1.75 m. A boy measured it as 1.80 m. Find the percentage error
4\(\frac{4}{7}\)
2\(\frac{6}{7}\)
2\(\frac{7}{9}\)
4\(\frac{7}{9}\)
Correct answer is B
Error = 1.80 - 1.75 = 0.05
%error = \(\frac{error}{original length}\)
= \(\frac{0.05 * 100}{1.75}\)
= 2.85 or 2\(\frac{6}{7}\)