2018 - JAMB Mathematics Past Questions and Answers - page 3
21
If the simple interest on a sum of money invested at 3% per annum for 2\(\frac{1}{2}\)Â Â years is N123, find the principal.
A
N676.50
B
N820
C
N1,640
D
N4,920
22
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?
A
N16,200
B
N14,200
C
N12,000
D
N8,000
23
The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.
| Mark | 0 | 1 | 2 | 3 | 4 | 5 |
| Frequency | 1 | 2 | 7 | 5 | 4 | 3 |
Â
What is the median mark?
A
1
B
2
C
3
D
4
24
The table shown gives the marks scored by a group of student in a test. Use the table to answer the question given.
| Mark | 0 | 1 | 2 | 3 | 4 | 5 |
| Frequency | 1 | 2 | 7 | 5 | 4 | 3 |
What is the probability of selecting a student from the group that scored 2 or 3
A
\(\frac{1}{11}\)
B
\(\frac{5}{22}\)
C
\(\frac{7}{22}\)
D
\(\frac{6}{11}\)
25
A boy walks 800m in 20 minutes. Calculate his average speed in Km/H
A
2.4
B
4
C
24
D
[]
26
A car uses one litre of petrol for every 14km. If one litre of petrol cost N63.00, how far can the car go with N900.00 worth of petrol?
A
420Km
B
405Km
C
210Km
D
200Km
27
In the diagram, GI is a tangent to the circle at H. If EF||GI, calculate the size of ∠EHF
A
126°
B
72°
C
54°
D
28°
28
How many times, correct to the nearest whole number, will a man run round a circular track of diameter 100m to cover a distance of 1000m?
A
3
B
4
C
5
D
6
29
Use the cummulative frequency curve to answer the question. Estimate the median of the date represented on the graph
A
35.5
B
36.5
C
37.5
D
38.5
30
Use the cummulative frequency curve to answer the question. What is the 80th percentile?
A
45.5
B
46.5
C
47.5
D
48.5
Loading lesson…