Express \(\frac{7}{19}\) as a percentage, correct to one decimal place
คำตอบ
(D)
36.8%
2
Express 398753 correct to three significant figures
คำตอบ
(D)
399000
3
simplify \(\frac{10}{\sqrt{32}}\)
คำตอบ
(A)
\(\frac{5}{4}\sqrt{2}\)
4
Find the missing number in the addition of the following numbers, in base seven
\(\begin{matrix}
4 & 3 & 2 & 1\\
1 & 2 & 3 & 4\\
* & * & * & *\\
1&2&3&4&1
\end{matrix}\)
คำตอบ
(A)
3453
5
What fraction must be subtracted from the sum of \(2\frac{1}{6}\) and \(2\frac{7}{12}\) to give \(3\frac{1}{4}\)?
The ages of three men are in the ratio 3:4:5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the three men
คำตอบ
(C)
108 years
10
Given that \(log_4 x = -3\), find x.
คำตอบ
(B)
\(\frac{1}{64}\)
11
Given that the logarithm of a number is \(\bar{1}.8732\), find, correct to 2 significant figures the square root of the number.
คำตอบ
(C)
0.86
12
A car moves at an average speed of 30kmh\(^{-1}\), how long does it take to cover 200 meters?
คำตอบ
(B)
24 sec
13
A man bought a television set on hire purchase for N25,000, out of which he paid N10,000, if he is allowed to pay the balance in eight equal installments, find the value of each installment.
คำตอบ
(C)
N1875
14
A tree is 8km due south of a building. Kofi is standing 8km west of the tree. How far is Kofi from the building?
คำตอบ
(C)
8√2km
15
A tree is 8km due south of a building. Kofi is standing 8km west of the tree. Find the bearing of Kofi from the building
คำตอบ
(C)
225o
16
Which of the following bearings is equivalent to S50°W?
คำตอบ
(D)
230o
17
In the diagram, AB is a vertical pole and BC is horizontal. If |AC| = 10m and |BC| = 5m, calculate the angle of depression of C from A
คำตอบ
(B)
60o
18
The bar chart shows the distribution of marks scored by a group of students in a test. Use the chart to answer the question below
How many students scored 4 marks and above?
คำตอบ
(D)
17
19
The bar chart shows the distribution of marks scored by a group of students in a test. Use the chart to answer the question below
How many students took the test?
คำตอบ
(B)
32
20
Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4, 2
คำตอบ
(C)
1.8
21
The probabilities that Kodjo and Adoga pass an examination are \(\frac{3}{4}\) and \(\frac{3}{5}\) respectively. Find the probability of both boys failing the examination
คำตอบ
(A)
\(\frac{1}{10}\)
22
Which of the following statement is not true about a rectangle? I.Each diagonal cuts the rectangle into two congruent triangles. II. A rectangle has four lines of symmetry III. The diagonals intersect at right angles
คำตอบ
(D)
II and III only
23
In the diagram, PQRS is a circle center O. PQR is a diameter and ∠PRQ = 40°. Calculate ∠QSR.
คำตอบ
(D)
50o
24
Each side of a regular convex polygon subtends an angle of 30° at its center. Calculate each interior angle
คำตอบ
(B)
150o
25
If the interior angles of hexagon are 107°, 2x°, 150°, 95°, (2x-15)° and 123°, find x.
คำตอบ
(B)
\(65^{\circ}\)
26
In the diagram, POS and ROT are straight lines, OPQR is a parallelogram. |OS| = |OT| and ∠OST = 50°. Calculate ∠OPQ.
คำตอบ
(D)
100o
27
Given that \(x = -\frac{1}{2}and \hspace{1mm} y = 4 \hspace{1mm} evaluate \hspace{1mm} 3x^2y+xy^2\)
คำตอบ
(A)
-5
28
Given that \(27^{(1+x)}=9,)\ find x
คำตอบ
(B)
\(\frac{-1}{3}\)
29
If x varies inversely as y and \(x = \frac{2}{3}\) when y = 9, find the value of y when \(x=\frac{3}{4}\)
คำตอบ
(D)
8
30
Given that (2x + 7) is a factor of \(2x^2 + 3x - 14\), find the other factor
คำตอบ
(C)
x - 2
31
Simplify \(\frac{1}{x-3}-\frac{3(x-1)}{x^2 - 9}\)
คำตอบ
(B)
\(\frac{-2}{x+3}\)
32
Form an inequality for a distance d meters which is more than 18m, but not more than 23m
คำตอบ
(B)
18 < d ≤ 23
33
Find the equation whose roots are -8 and 5
คำตอบ
(D)
\(x^2 + 3x - 40=0\)
34
Make t the subject of formula \(k = m\sqrt{\frac{t-p}{r}}\)
คำตอบ
(B)
\(\frac{rk^2+pm^2}{m^2}\)
35
Solve the equation \(3y^2\) = 27y
คำตอบ
(B)
y = 0 or 9
36
Find the value of x such that the expression \(\frac{1}{x}+\frac{4}{3x}-\frac{5}{6x}+1\) equals zero
คำตอบ
(C)
\(\frac{-3}{2}\)
37
Given that p varies directly as q while q varies inversely as r, which of the following statements is true?
คำตอบ
(B)
p varies inversely as r
38
In the diagram, PQS is a circle with center O. RST is a tangent at S and ∠SOP = 96o. Find ∠PST
คำตอบ
(B)
48o
39
A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many revolutions does it make?[Take \(\pi = \frac{22}{7}\)]
คำตอบ
(C)
25
40
The height of a pyramid on square base is 15cm. if the volume is 80cm^3, find the area of the square base.
คำตอบ
(C)
16cm2
41
A tap leaks at the rate of 2cm\(^3\) per seconds. How long will it take the tap to fill a container of 45 liters capacity? (1 liters = 1000cm\(^3\))
คำตอบ
(B)
6hr 15min
42
The length of the parallel sides of a trapezium are 5cm and 7cm. If its area is 120cm\(^2\), find the perpendicular distance between the parallel sides
คำตอบ
(D)
20.0cm
43
The arc of a circle 50 cm long, subtends angle of 75° at the center of the circle. Find correct to 3 significant figures, the radius of the circle. Take \(\pi = \frac{22}{7}\)
คำตอบ
(B)
38.2cm
44
In the diagram, |PQ| = |PS| Which of the following statements is true?
คำตอบ
(D)
∠PQR=∠PSR
45
The area of a circle is 38.5cm2. Find its diameter [take \(\pi = \frac{22}{7}\)]
