Express \(\frac{7}{19}\) as a percentage, correct to one decimal place
Trả lời
(D)
36.8%
2
Express 398753 correct to three significant figures
Trả lời
(D)
399000
3
simplify \(\frac{10}{\sqrt{32}}\)
Trả lời
(A)
\(\frac{5}{4}\sqrt{2}\)
4
Find the missing number in the addition of the following numbers, in base seven
\(\begin{matrix}
4 & 3 & 2 & 1\\
1 & 2 & 3 & 4\\
* & * & * & *\\
1&2&3&4&1
\end{matrix}\)
Trả lời
(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
Trả lời
(C)
108 years
10
Given that \(log_4 x = -3\), find x.
Trả lời
(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.
Trả lời
(C)
0.86
12
A car moves at an average speed of 30kmh\(^{-1}\), how long does it take to cover 200 meters?
Trả lời
(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.
Trả lời
(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?
Trả lời
(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
Trả lời
(C)
225o
16
Which of the following bearings is equivalent to S50°W?
Trả lời
(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
Trả lời
(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?
Trả lời
(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?
Trả lời
(B)
32
20
Calculate the standard deviation of the following marks; 2, 3, 6, 2, 5, 0, 4, 2
Trả lời
(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
Trả lời
(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
Trả lời
(D)
II and III only
23
In the diagram, PQRS is a circle center O. PQR is a diameter and ∠PRQ = 40°. Calculate ∠QSR.
Trả lời
(D)
50o
24
Each side of a regular convex polygon subtends an angle of 30° at its center. Calculate each interior angle
Trả lời
(B)
150o
25
If the interior angles of hexagon are 107°, 2x°, 150°, 95°, (2x-15)° and 123°, find x.
Trả lời
(B)
\(65^{\circ}\)
26
In the diagram, POS and ROT are straight lines, OPQR is a parallelogram. |OS| = |OT| and ∠OST = 50°. Calculate ∠OPQ.
Trả lời
(D)
100o
27
Given that \(x = -\frac{1}{2}and \hspace{1mm} y = 4 \hspace{1mm} evaluate \hspace{1mm} 3x^2y+xy^2\)
Trả lời
(A)
-5
28
Given that \(27^{(1+x)}=9,)\ find x
Trả lời
(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 \(x=\frac{3}{4}\)
Trả lời
(D)
8
30
Given that (2x + 7) is a factor of \(2x^2 + 3x - 14\), find the other factor
Trả lời
(C)
x - 2
31
Simplify \(\frac{1}{x-3}-\frac{3(x-1)}{x^2 - 9}\)
Trả lời
(B)
\(\frac{-2}{x+3}\)
32
Form an inequality for a distance d meters which is more than 18m, but not more than 23m
Trả lời
(B)
18 < d ≤ 23
33
Find the equation whose roots are -8 and 5
Trả lời
(D)
\(x^2 + 3x - 40=0\)
34
Make t the subject of formula \(k = m\sqrt{\frac{t-p}{r}}\)
Trả lời
(B)
\(\frac{rk^2+pm^2}{m^2}\)
35
Solve the equation \(3y^2\) = 27y
Trả lời
(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
Trả lời
(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?
Trả lời
(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
Trả lời
(B)
48o
39
A bicycle wheel of radius 42cm is rolled over a distance 66 meters. How many revolutions does it make?[Take \(\pi = \frac{22}{7}\)]
Trả lời
(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.
Trả lời
(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\(^3\))
Trả lời
(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
Trả lời
(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 \(\pi = \frac{22}{7}\)
Trả lời
(B)
38.2cm
44
In the diagram, |PQ| = |PS| Which of the following statements is true?
Trả lời
(D)
∠PQR=∠PSR
45
The area of a circle is 38.5cm2. Find its diameter [take \(\pi = \frac{22}{7}\)]
