Find, correct to three significant figures, the value of \(\sqrt{41830}\).
Хариулт
(A)
205
2
Write down the number 0.0052048 correct to three significant figures
Хариулт
(C)
0.00520
3
Evaluate \((2^{0} + 4^{-\frac{1}{2}})^{2}\)
Хариулт
(C)
\(\frac{9}{4}\)
4
Which of the following is NOT a factor of 12\(^{4}\) - 5\(^{4}\)?
Хариулт
(D)
49
5
Rationalize the denominator of the given expression \(\frac{\sqrt{1 + a} - \sqrt{a}}{\sqrt{1 + a} + \sqrt{a}}\)
Хариулт
(A)
1 + 2a - 2\(\sqrt{a(1 + a)}\)
6
When a dealer sells a bicycle for N81 he makes a profit of 8%. What did he pay for the bicycle?
Хариулт
(C)
N75
7
The median of the set of numbers 4, 9, 4, 13, 7, 14, 10, 17 is
Хариулт
(C)
\(\frac{19}{2}\)
8
List all integer values of x satisfying the inequality -1 < 2x - 5 \(\leq\) 5
Хариулт
(B)
3, 4, 5
9
Find the roots of the equation 10x2 - 13x - 3 = 0
Хариулт
(E)
x = -\(\frac{1}{5}\) or \(\frac{3}{2}\)
10
A solid cylinder of radius 3cm has a total surface area of 36\(\pi\)cm2. Find its height
Хариулт
(B)
3cm
11
The ratio of the areas of similar triangles is necessarily equal to
Хариулт
(B)
the ratio of the squares of corresponding sides
12
P and Q are fixed points and X is a variable point which moves so that angle PXQ = 45o. What is the locus of x?
Хариулт
(B)
The perpendicular bisector of PQ
13
A man and his wife went to buy an article costing N400. The woman had 10% of the cost and the man 40% of the remainder. How much did they have altogether?
Хариулт
(C)
N184
14
Simplify \(\frac{log_{10}8}{log_{10}4}\)
Хариулт
(C)
\(\frac{3}{2}\)
15
Make c the subject of formula v = 1 - \(\frac{a}{5}\)(b + \(\frac{3c}{7}\))
Хариулт
(A)
[\(\frac{7}{3}\) + \(\frac{5}{a}\)(v - 1)] + b
16
What factor is common to all the expressions x2 - x, 2x2 + x - 1 and x2 - 1?
Хариулт
(D)
No common factor
17
Which of the formula below represents the general terms of the following set of numbers(-1, \(\frac{2}{3}\), -\(\frac{1}{2}\), \(\frac{2}{5}\)......) for n = 1, 2, 3, 4.......?
Хариулт
(C)
(-1)n \(\frac{2}{n + 1}\)
18
Three numbers, x, y and z are connected by the relationships y = \(\frac{4x}{9}\) + 1. If x = 99, Find z = \(\frac{4y}{9}\) + 1
Хариулт
(C)
21
19
In a school, there are 35 students in class 2A and 40 in class 2B. The mean score for class 2 in an English Literature examination is 60.0 and that for 2B in the same paper is 52.5. Find, to one place of decimal, the mean for the combined classes
Хариулт
(B)
56.0
20
A set of data contains a total of 130 items which are divided into six groups for display on a pie chart. If one group contains 26 items, then the sector representing this group on the pie chart contains an angle xo at the centre of the circle where x is
Хариулт
(D)
72o
21
In triangle FGH, < G = 90º, < H = 60º, while in triangle XYZ, < X = 60º and < Y = 30º. Form XYZ write down the ratio equal to \(\frac{FG}{FH}\)
Хариулт
(D)
\(\frac{YZ}{XY}\)
22
A pentagon has four of its angles equal. If the size of the fifth angle is 60o, Find the size of each of the four equal angles.
Хариулт
(C)
120o
23
Find the product of (2\(\sqrt{y} - 3y\)) and (3y + 2\(\sqrt{y}\))
Хариулт
(C)
4y - 9y2
24
(\(\frac{x^a}{x^b}\))a + b = (\(\frac{x^{a + b}}{x^{a - b}}\))\(\frac{a^2}{b}\)
Хариулт
(D)
\(\frac{1}{x^{a2 + b2}}\)
25
What will be the value of k so that the quadratic equation kx2 - 4x + 1 = 0 has two equal roots?
Хариулт
(C)
4
26
Find the solution of the equation x + 2\(\sqrt{x} - 8\) = 0
Хариулт
(A)
(4, 16)
27
If it is given that \(5^{x + 1} + 5^x = 150\), then the value of x is equal to
Хариулт
(D)
2
28
Solve the system of equation 2\(^{x + y}\) = 32, \(3^{3y - x}\) = 27
Хариулт
(A)
(3, 2)
29
Simplify the given expression \(\sqrt{\frac{1 - cos x}{1 + cos x}}\)
Хариулт
(A)
\(\frac{1 - cos x}{sin x}\)
30
Find the area of the curved surface of a cone whose base radius is 6cm and whose height is 8cm. (take \(\pi\) = \(\frac{22}{7}\))
Хариулт
(A)
188.57cm2
31
Solve the equation for the positive values of \(\theta\) less than 360o. 3 tan \(\theta\) + 2 = -1
Хариулт
(A)
135o or 315o
32
Given log 2 = 0.69, log3 = 1, 10 and log7 = 1.90, all to a fixed base, find log 10.5 to the same base without using tables.
The expression x\(^3\) - 4x\(^2\) + cx + d is such that x + 1 is its factor, and its value is 1 when x is -2. Find c and d.
Хариулт
(C)
c = -20 and d = -15
36
If a function is defined by f(x + 1) = 3x2 - x + 4, Find f(0).
Хариулт
(D)
8
37
A cylindrical motor of height 12cm has uniform thickness of 2cm. If the diameter of its outer cross section is 10cm, Find the volume of the constituent material. (take \(\pi\) = \(\frac{22}{7}\)
Хариулт
(D)
\(\frac{4224}{7}\)cm3
38
If x varies inversely as y, and y varies directly as the square root of z, and z varies directly \(\frac{1}{w^2}\) write down in words how x varies with w
Хариулт
(B)
x varies directly as w2
39
Write the decimal number 39 to base 2
Хариулт
(A)
100111 base 2
40
If PN is perpendicular to QR, find the value of tan x.
Хариулт
(B)
\(\frac{3}{5}\)
41
In the figure, PQ\\SR, ST\\, ST\\RQ, PS = 7cm, PT = 7cm, SR = 4cm. Find the ratio of the area QRST to the area of PQRS.
Хариулт
(B)
56.105
42
In the figure, If PT is parallel to RS, PQ = PT, and angle SQT = 90o, Find x
Хариулт
(D)
70o
43
In the figure, PS bisects angle QPR. Find the ratio SR:QR.
Хариулт
(C)
1:4
44
fG is a given straight line and H is a fixed point. The construction marks shown in the diagram indicate the
Хариулт
(D)
perpendicular from H to the line FG
45
In the figure, FGHJ is a circle of radius 3cm centre O. FOH, GOJ are perpendicular diameters. With G as centre of an arc of a circle is drawn to pass through F and H. Find the length of the perimeter of the lunar portion shaded.
