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.
9
18
24
27
Correct answer is C
x = 3 - √3
x2 = (3 - √3)2
= 9 + 3 - 6√34
= 12 - 6√3
= 6(2 - √3)
∴ x2 + 36x2 = 6(2 - √3) + 366(2−√3)
6(2 - √3) + 62−√3 = 6(- √3) + 6(2+√3)(2−√3)(2+√3)
= 6(2 - √3) + 6(2+√3)4−3
6(2 - √3) + 6(2 + √3) = 12 + 12
= 24
17√4
4√17
17√2
12√4
Correct answer is C
5√18 - 3√72 + 4√50 = 5(3√2) - 3(6√2) + 4(5√2)
15√2 - 18√2 + 20√2 = 35√2 - 18√2
= 17√2
Simplify (1.25×10−4)×(2.0×10−1)(6.25×105)
4.0 x 10-3
5.0 x 10-2
2.0 x 10-1
5.0 x 10-3
Correct answer is A
(1.25×10−4)×(2.0×10−1)(6.25×105) = 1.25×26.25 x 104 - 1 - 5
2.506.25 x 10-2 = 250625 x 10-2
0.4 x 10-2 = 4.0 x 10-3
What is the value of x satisfying the equation 42x43x = 2?
-2
-12
12
2
Correct answer is B
42x43x = 2
42x - 3x = 2
4-x = 2
(22)-x
= 21
Equating coefficients: -2x = 1
x = -12
n2
n
1n
1n2
Correct answer is A
Let logban=x
∴
a^{n} = (a^{\frac{1}{n}})^{x}
a^{n} = a^{\frac{x}{n}} \implies n = \frac{x}{n}
x = n^{2}