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# JAMB Mathematics Questions (2020) | Jamb Math Repeated Questions

JAMB Mathematics Questions for 2020/2021.

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The Joint Admissions and Matriculations Board is a Nigerian entrance examination board for tertiary-level institutions. The board conducts entrance Unified Tertiary Matriculation Examination for prospective undergraduates into Nigerian universities.

**Contents**show

## JAMB Mathematics Questions

**OBJECTIVES**

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

A. 0.0014

B. 0.001448

C. 0.0022

D. 0.002172

**2. At what rate would a sum of #100.00 deposited for 5 years raise an interest of #7.50?**

A. 11/2%

B. 21/2%

C. 15%

D. 25%

**3. Three children shared a basket of mangoes in such a way that the first child took ¼ of the mangoes and the second ¾ 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

**4. Simplify and express in standard form (0.00275 x 0.00640/( 0.025 x 0.08)**

A. 8.8 x 10-1

B. 8.8 x 102

C. 8.8 x 10-3

D. 8.8 x 103

**5. Three brothers in a business deal share the profit at the end of contract. The first received 1/3 of the profit and the second 2/3 of the remainder. If the third received the remaining #12.000.00, how much profit did they share?**

A. #60,000.00

B. #54,000.00

C. #48,000.00

D. #42,000.00

**6. Simplify √160r2 + √(71r4 + √100r3**

A. 9r2

B. 12√3r

C. 13r

D. √13r

**7. Simplify √27 + 3/√3**

A. 4√3 B. 4/√3 C. 3√3 D. 3√/4

**8. Simplify 3Log69 + Log612 + Log664 – Log672**

A. 5 B. 7776 C. Log631 D. (7776)6

**9. Simplify (1 + 1)-1**

x-1 y-1¬¬

**10. Find the sum of the first twenty terms of the arithmetic progression Log a, Log a2, Log a3**

A. log a20

B. log a21

C. log a200

D. log a210

**11. A carpenter charges #40.00 per day for himself and #10.00 per day for his assistant. If a fleet of a cars were painted for #2,000.00 and the painter worked 10 days more than his assistant, how much did the assistant receive?**

A. #32.00

B. #320.00

**12. Find the sum of the first 18 terms of the progression 3, 6, 12………..**

A. 3(217 – 1)

B. 3(218) – 1)

C. 3(218 + 1)

D. 3(218 – 1)

**13. The angle of a sector of a circle, radius 10.5cm, is 480. calculate the perimeter of the sector**

A. 8.8cm

B. 25.4cm

C. 25.6cm

D. 29.8cm

JAMB MATHEMATICS QUESTIONS TODAY…

MATHS 9AM

1 :- (101000) base 2

2 :- square root 3 – 2 square 2 + square root 6 – 3

3 :- 120

4 :- -18

5 :- 0.000083

6 :- -1 3

7 :- 4.0cm square

8 :- 1/2(x base 1 y base 1), 1/2 (x base 2 + y base 2)

9 :- 3

10 :- 6

11 :- 2, 6

12 :- 10! / 3! 3! 2!

13 :- 8/15

14 :- 45

15 :- 3 square root 2

16 :- 1/2

17 :- 24:16

18 :- 25

19 :- (3,8,2 10,3,2 3,6,4)

20 :- 16 (1/2) power n

21 :- 792

22 :- 45 degree

23 :- 51.2

24 :- {4,6}

25 :- 85 degree

26 :- 5

27 :- 82

28 :- N1560

29 :- 3

30 :- 6 sin x – 4/3 x power 3 + k

31 :- -11

32 :- (x+1) (3x power 2 – 8x + 11) – 19

33 :- 1

34 :- 1

35 :- 5

36 :- (10413) base five

37 :- {t}

38 :- 36

39 :- 3

40 :- 6.5

**14. Find the length of a side of a rhombus whose diagonals are 6cm and 8cm.**

A. 8cm

B. 5cm

C. 4cm

D. 3cm

**15. Each of the interior angles of a regular polygon is 1400. How many sides has the polygon?**

A. 9 B. 8 C. 7 D. 5

**16. A cylindrical pipe, made of metal is 3cm, thick if the internal radius of the pipe is 10cm. Find the volume of metal used in making 3m of the pipe**

A. 153πcm3

B. 207πcm3

C. 15,300πcm3

D. 20,700πcm3

**17. If the height of two circular cylinders are in the ratio 2:3 and their base radii are in the ratio 9. What is the ratio of their volume?**

A. 27:32

B. 27:23

C. 23:32

D. 21:27

**18. The locus of a point which moves so that it is equidistant from two intersecting straight lines is the**

A. perpendicular bisector of the two lines

B. angle bisector of the two lines

C. bisector of the two lines

D. line parallel to the two lines

**19. 4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the sectors representing all numbers equal to or greater than 16.**

A. 480

B. 840

C. 920

D. 2760

**20. The mean of ten positive numbers is 16. when another number is added, the mean becomes 18. find the eleventh number.**

A. 3

B. 16

C. 18

D. 30

**21. Two numbers are removed at random from the numbers 1,2,3 and 4. what is the probability that the sum of the numbers removed is even?**

A. 2/3

B. ½

C. 1/3

D. ¼

**22. Find the probability that a number selected at random from 41 to 56 is a multiple of 9**

A. 1/9

B. 2/15

C. 3/16

D. 7/8

**23. Musa borrows #10.00 at 2% per month interest and repays #8.00 after 4 months. However much does he still owe?**

A. #10.80

B. #10.67

C. #2.80

C. #2.67

**24. If 3 gallons of spirit containing 20% water are added to 5gallons of another spirit containing 15% water, what percentage of the mixture is water?**

A. 24/5%

B. 167/8%

C. 181/8%

D. 187/8%

**25 What is the product of 27/5 – (3)3 and (1/5)?**

A. 5

B. 3

C. 1

D. 1/25

**26. Simplify 2log2/5 – log72/125 + log9**

A. 1 – 4log 3

B. –1 + 2log3

C. –1 +5log2

D. 1-2log2

**27. A car travels from Calabar to Enugu, a distant of pkm with an average speed of ukm per hour and continues to Benin, a distance of qkm, with an average speed of wkm per hour. Find its average speed from Calabar to Benin.**

A. (p+q)/(up+wq)

B. u+w

C. uw(p+q)/(wp+uq)

D. (wp+uq)/(u+wq)

**28. If w varies inversely as uv/u + v and is equal to 8 when u = 2 and v = 6, find a relationship between u, v, w.**

A. upw = 16(u + t)

B. 16ur = 3w(u + t)

C. upw = 12(u + t)

D. 12upw = u + r

**29. If g(x = x2 + 3x ) find g(x + 1) – g(x)**

A. (x + 2)

B. 2(x + 2)

C. (2x + 1)

D. (x + 4)

**30. Factorize m3 – m2 – m + 2**

A. (m2 + 1)(m – 2)

B. (m + 1)(m + 1)(m + 2)

C. (m + 1)(m + 1)(m – 2)

D. (m2 + 2)(m – 1)

**31. The angles of a quadrilateral are 5x – 30, 4x + 60, 60 – x and 3x + 61. find the smallest of these angles.**

A. 5x – 30

B. 4x + 60

C. 60 – x

D. 3x + 61

32. What is the nth term of the sequence 2, 6, 12, 20,…?

A. 4n – 2

B. 2(3n – 1)

C. n2 + n

D. n2 + 3n +2

**33. If the binary operation * is defined by m*n = mn + m + n for any real number m and n, find the identity element under this operation.**

A. e = 1

B. e = -1

C. e = -2

D. e = 0

**34. When PT is the transpose of P, calculate [PT] when x = 0, y = 1 and z = 2**

A. 48

B. 24

C. –24

D. –48

**35. PQ is equivalent to**

A. PPT

B. PP-T

C. QP

D. PP

**36. Determine the distance on the earth’s surface between two towns P(Lat. 600N, Long. 200E) and Q (Lat. 600N, Long 250W)**

A. 800p/9km

B. 800Ö3p/9km

C. 800pkm

D. 800Ö3pkm

**37. X is a point due east of point Y on a coast Z is another point on the coast but 6.3km due south of Y. if the distance ZX is 12km, calculate the bearing of Z from X**

A. 2400

B. 2100

C. 15008

D. 600

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