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.
2
1
0
3
Correct answer is D
Let the extension be E and the tension be T.
Then \(E \propto T\)
\(E = kT\)
when T = 8N, E = 2cm
\(2 = k \times 8\)
\(k = \frac{2}{8} = 0.25\)
\(\therefore E = 0.25T\)
when T = 12N, \(E = 0.25 \times 12 = 3cm\)
Given that A = {1, 5, 7} B = {3, 9, 12, 15} C = {2, 4, 6, 8} Find (A ∪ B) ∪ C
{1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15}
{1, 2, 3, 5, 6, 8, 12, 15}
{2, 4, 5, 9, 12, 15}
{1, 5, 6, 7, 8, 9, 12, 15}
Correct answer is A
{A ∪ B ∪ C}
{A ∪ B} = {1, 3, 5, 7, 9, 12, 15}
∪ C={2,4,6,8}
{A ∪ B} ∪ C = {1, 3, 5, 7, 9, 12, 15} ∪ {2, 4, 6, 8}
= {1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15}
{A ∪ B} ∪ C = {1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 15}
Find at which rate per annum simple interest N525 will amount to N588 in 3 years.
3%
2%
5%
4%
Correct answer is D
I = A − P
= N588 − N525
∴I = N63
I = PRT ÷ 100
R = [100I ÷PT]
R = [(100 × 63 ) ÷ (525 × 3)]
= (6300 ÷ 1575) = 4
∴ The rate = 4 %
1.761
1.354
1.861
2.549
Correct answer is C
log520 = x
5x = 20(Take log10 of both sides)
log5x = log20
xlog5 = log20
x= [log20 ÷ log5]
[1.30103 ÷ 0.69897]
x = 1.861
Make x the subject of the equation
s = 2 + \(\frac{t}{5} \)(x + ⅗y)
x = 5[(s − 2) ÷ t] - 3/5y
x = 25[(s − 2) ÷ t] − 3ty
x = [1 ÷ (s − 2)3ty]
x = [5(s − 2) 2 ÷ 3ty] × t
Correct answer is A
No explanation has been provided for this answer.