Mathematics 2021 Past Questions | JAMB

Study the following Mathematics past questions and answers for JAMBWAEC  NECO and Post-JAMB. Get prepared with official past questions and answers for upcoming examinations.

  1. Solve the following equation: \(\frac{2}{(2r – 1)}\) – \(\frac{5}{3}\) =  \(\frac{1}{(r + 2)}\)
  • A. ( 1,\(\frac{5}{2}\) )
  • B. ( 1,-\(\frac{5}{2}\) )
  • C. ( \(\frac{5}{2}\), 1 )
  • D. (2,1)

2. In how many ways can 2 students be selected from a group of 5 students in a debating competition?

  • A. 25 ways
  • B. 10 ways
  • C. 15 ways
  • D. 20 ways

3.  What is the rate of change of the volume V of a hemisphere with respect to its radius r when r = 2?

  • A. 8π
  • B. 16π
  • C. 2π
  • D. 4π

4.  determine the maximum value of y=3x2+ 5x – 3

  • A. 6
  • B. 0
  • C. 2
  • D. 4

5.  A trapezium has two parallel sides of length 5cm and 9cm. If the area is 91cm2, find the distance between the parallel sides

  • A. 13 cm
  • B. 4 cm
  • C. 6 cm
  • D. 7 cm

6.  find the value of p if the line which passes through (-1, -p) and (-2p,2) is parallel to the line 2y+8x-17=0?

  • A. −2/7
  • B. 2/7
  • C. −6/7
  • D. 6/7

7. The ratio of the length of two similar rectangular blocks is 2 : 3. If the volume of the larger block is 351cm3, then the volume of the other block is?

  • A. 234.00 cm3
  • B. 526.50 cm3
  • C. 166.00 cm3
  • D. 687cm3

8. Find the derivatives of the function y = 2x2(2x – 1) at the point x = -1?

  • A. 18
  • B. 16
  • C. -4
  • D. -6

9.  Correct 241.34(3 x 10-3)2to 4 significant figures

  • A. 0.0014
  • B. 0.001448
  • C. 0.0022
  • D. 0.002172

10. Find the mean deviation of 1, 2, 3 and 4

  • A. 1.0
  • B. 1.5
  • C. 2.0
  • D. 2.5

11. At what rate would a sum of N100.00 deposited for 5 years raise an interest of N7.50?

  • A. %
  • B. 2%
  • C. 1.5%
  • D. 25%

12. Three children shared a basket of mangoes in such a way that the first child took 1/4 of the mangoes and the second 3/4 of the remainder. What fraction of the mangoes did the third child take?

  • A. 3/16
  • B. 7/16
  • C. 9/16
  • D. 13/16

 

13. Simplify and express in standard form \(\frac{0.00275 \times 0.0064}{0.025 \times 0.08}\)  
  • A. 8.8 x 10-1
  • B. 8.8 x 10-2
  • C. 8.8 x 10-3
  • D. 8.8 x 103
 

14.   Simplify \(\sqrt{27}\) + \(\frac{3}{\sqrt{3}}\)

  • A. 4\(\sqrt{3}\)
  • B. \(\frac{4}{\sqrt{3}}\)
  • C. 3\(\sqrt{3}\)
  • D. \(\frac{\sqrt{3}}{4}\)

15.  Three brothers in a business deal share the profit at the end of a contact. The first received 1/3 of the profit and the second 2/3 of the remainder. If the third received the remaining N12000.00 how much profit did they share?

  • A. N60 000.00
  • B. N54 000.00
  • C. N48 000.00
  • D. N42 000.00
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
0 0 votes
Article Rating
0
Would love your thoughts, please comment.x
()
x
Scroll to Top