Mathematics 2020 Past Questions | JAMB
Study the following Mathematics past questions and answers for JAMB, WAEC NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.
- Evaluate (212)3– (121)3+ (222)3
- A. (313)3
- B. (1000)3
- C. (1020)3
- D. (1222)3
2. Factorise (4a + 3)2– (3a – 2)2
- A. (a + 1)(a + 5)
- B. (a – 5)(7a – 1)
- C. (a + 5)(7a + 1)
- D. a(7a + 1)
3. Find all median of the numbers 89, 141, 130, 161, 120, 131, 131, 100, 108 and 119
- A. 131
- B. 125
- C. 123
- D. 120
4. Find all real number x which satisfy the inequality 1/3(x + 1) – 1 > 1/5(x + 4)
- A. x < 11
- B. x < -1
- C. x > 6
- D. x > 11
5. Reach each number to two significant figures and then evaluate 0.02174 x 1.2047/ 0.023789
- A. 0
- B. 0.9
- C. 1.1
- D. 1.2
6. Four boys and ten girls can cut a field first in 5 hours. If the boys work at 5/4the rate at which the girls work, how many boys will be needed to cut the field in 3 hours?
- A. 180
- B. 60
- C. 25
- D. 20
7. What is the circumference of latitude 0oS if R is the radius of the earth?
- A. cosθ
- B. 2πR cosθ
- C. R sin θ
- D. 2 πr sinθ
8. A room is 12m long, 9m wide and 8m high. Find the cosine of the angle which a diagonal of the room makes with the floor of the room
- A. 15/17
- B. 8/17
- C. 8/15
- D. 12/17
9. The goals scored by 40 football teams from three league divisions are recorded below
No of goals | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
Frequency | 4 | 3 | 15 | 16 | 1 | 0 | 1 |
What is the total number of goals scored by all the teams?
- A. 21
- B. 40
- C. 91
- D. 96
10. In a class of 150 students, the sector in a pie chart representing the students offering physics has angle 12o. How many students are offering physics?
- A. 18
- B. 15
- C. 10
- D. 5
11. If log102 = 0.3010 and log103 = 0.4771, eventually without using the logarithm tables, log105
- A. 0.3010
- B. 0.4771
- C. 0.6532
- D. 0.9542
12.
Simplify \(\frac{324 – 4x^2}{2x + 18}\)
- A. 2(x – 9)
- B. 2(9 + x)
- C. 81 – x22
- D. -2(x – 9)
13. In preparing rice cutlets, a cook used 75g of rice, 40g of margarine, 105g of meat and 20g of bread crumbs. Find the angle of the sector which represent meat in a pie chart?
- A. 30o
- B. 60o
- C. 112.5o
- D. 157.5o
14. The angle of a sector of a circle radius 10.5 cm is 48o. Calculate the perimeter of the sector.
- A. 25.4cm
- B. 25.4cm
- C. 25.6cm
- D. 29.8cm
What is the product of \(\frac{27}{5}\), \((3)^{-3}\) and (\(\frac{1}{5})^{-1}\)?
- A. 5
- B. 3
- C. 1
- D. \(\frac{1}{25}\)
