Given that y = 1 - \(\frac{2x}{4x - 3}\), find the value of x for which y is undefined
คำตอบ
(B)
\(\frac{3}{4}\)
6
P is a point on the same plane with a fixed point A. If P moves such that it is always equidistant from A, the locus of P is
คำตอบ
(C)
a circle with centre A
7
A fair coin is tossed three times. Find the probability of getting two heads and one tail.
คำตอบ
(B)
\(\frac{3}{8}\)
8
If 30% of y is equal to x, what in terms of x, is 30% of 3y?
คำตอบ
(D)
3x
9
A baker used 40% of a 50kg bag of flour. If \(\frac{1}{8}\) of the amount used was for the cake, how many kilogram of flour was used for the cake?
คำตอบ
(A)
2\(\frac{1}{2}\)
10
If tan y = 0.404, where y is acute, find cos 2y
คำตอบ
(B)
0.719
11
The ratio of boys to girls in a class is 5:3. Find the probability of selecting at random, a girl from the class
คำตอบ
(C)
\(\frac{3}{8}\)
12
\(\begin{array}{c|c} x & 1 & 4 & p \\ \hline y & 0.5 & 1 & 2.5\end{array}\). The table above satisfies the relation y = k\(\sqrt{x}\), where k is a positive constant. Find the value of K.
คำตอบ
(A)
0.5
13
\(\begin{array}{c|c} x & 1 & 4 & p \\ \hline y & 0.5 & 1 & 2.5\end{array}\). The table below satisfies the relation y = k\(\sqrt{x}\), where k is a positive constant. Find the value of P,
คำตอบ
(D)
25
14
What must be added to x2 - 3x to make it a perfect square?
คำตอบ
(A)
\(\frac{9}{4}\)
15
Given that (2x - 1)(x + 5) = 2x2 - mx - 5, what is the value of m
คำตอบ
(C)
-9
16
What is the place value of 9 in the number 3.0492?
คำตอบ
(B)
\(\frac{9}{1000}\)
17
If the simple interest on a sum of money invested at 3% per annum for 2\(\frac{1}{2}\) years is N123, find the principal.
คำตอบ
(C)
N1,640
18
A machine valued at N20,000 depreciates by 10% every year. What will be the value of the machine at the end of two years?
คำตอบ
(A)
N16,200
19
If 2x + y = 10, and y \(\neq\) 0, which of the following is not a possible value of x?
คำตอบ
(B)
5
20
If x + y = 12 and 3x - y = 20, find the value of 2x - y
คำตอบ
(C)
12
21
Which of these equations best describes the points of intersection of the curve and the line?
คำตอบ
(C)
x2 + x - 6 = 0
22
If loga270 - loga10 + loga \(\frac{1}{3}\) = 2, what is the value of a?
คำตอบ
(A)
3
23
a conical water-jug is 7cm in diameter and 6cm deep. find the volume of water it can hold. [Take \(\pi = \frac{22}{7}\)]
คำตอบ
(C)
77cm3
24
If p = [\(\frac{Q(R - T)}{15}\)]\(^ \frac{1}{3}\), make T the subject of the relation
คำตอบ
(B)
T = R - \(\frac{15P^3}{Q}\)
25
A seller allows 20% discount for cash payment on the marked price of his goods. What is the ratio of the cash payment to the marked price
คำตอบ
(D)
4:5
26
The wheel of a tractor has a diameter 1.4m. What distance does it cover in 100 complete revolutions? [Take \(\pi = \frac{22}{7}\)]
คำตอบ
(D)
440m
27
If p = {1, 3, 5, 7, 9} and Q = {2, 4, 6, 8, 10} are subsets of a universal set. U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. What are the elements of P1 \(\cap\) Q1?
คำตอบ
(C)
\(\varnothing\)
28
The values of three angles at a point are 3y - 45o, y + 25o and yo . Find the value of y.
คำตอบ
(D)
76o
29
A rectangular carpet 2.5m long and 2.4m wide covers 5% of a rectangular floor. Calculate the area of the floor
คำตอบ
(C)
120m2
30
Which of the following is not a measure of centre tendency?
คำตอบ
(C)
range
31
The temperature in a chemical plant was -5oC at 2.00 am. The temperature fell by 6oC and then rose again by 7oC. What was the final temperature?
คำตอบ
(B)
-4oC
32
Simplify \(\frac{20}{5\sqrt{28} - 2 \sqrt{63}}\)
คำตอบ
(A)
\(\frac{5\sqrt{7}}{7}\)
33
A ladder 16m long leans against an electric pole. If the ladder makes an angle of 65o with the ground, how far up the electric pole does its top reach
คำตอบ
(B)
14.5m
34
In the diagram, PQUV, PQTU, QRTU and QRST are parallelograms. |UV| = 4.8cm and the perpendicular distance between PR and VS is 5cm. Calculate the area of quadrilateral PRSV
คำตอบ
(C)
60cm2
35
In the diagram, |QR| = 5cm, PQR = 60o and PSR = 45o. Find |PS|, leaving your answe in surd form.
คำตอบ
(D)
5\(\sqrt{6}\)cm
36
In the diagram, \(\frac{PQ}{RS}\), find xo + yo
คำตอบ
(D)
180o
37
In the diagram, PR is a diameter of the circle centre O. RS is a tangent at R and QPR = 58o. Find < QRS
คำตอบ
(C)
122o
38
In the diagram P, Q, R, S are points on the circle RQS = 30o. PRS = 50o and PSQ = 20o. What is the value of xo + yo?
คำตอบ
(B)
130o
39
In the diagram, P, Q and R are three points in a plane such that the bearing of R from Q is 110o and the bearing of Q from P is 050o. Find angle PQR.
คำตอบ
(C)
120o
40
In the diagram, the two circles have a common centre O. If the area of the larger circle is 100\(\pi\) and that of the smaller circle is 49\(\pi\), find x
คำตอบ
(B)
3
41
In the diagram, PQR is a straight line, QRST is a parallelogram, < TPQ = 72o and < RST = 126o. What type of triangle is \(\bigtriangleup\) PQT?
คำตอบ
(C)
An isosceles triangle
42
How many pupils took the test?
คำตอบ
(D)
40
43
If the pass mark was 4. What percentage of the pupils failed the test?
คำตอบ
(A)
20.0%
44
The diagram shows an arc MN of a circle, centre O, with 10cm. If < MON = 72o. calculate the length of the arc, correct to three significant figures. [Take \(\pi = \frac{22}{7}\)]
