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**My info Connect** brings you more Jamb Repeated Questions and answers. Our focus this time is on **Jamb Repeated past questions and answers in Mathematics.**

Keep up with the constantly updated Jamb Repeated Questions by **clicking here**. If you are taking Jamb in 2020, here are some of the most repeated Jamb Questions and **Jamb Repeated past questions and answers in Mathematics**. These questions will cover a high majority of all parts of your Mathematics syllabus.

Early preparation is key to success. So, take note of some of these questions because some of these questions are likely going to be repeated.

**SEE ALSO: Recent JAMB Repeated Past Questions and Answers for all Subjects 2020**

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So, let’s get down to business

### JAMB REPEATED PAST QUESTIONS AND ANSWERS IN MATHEMATICS | LIKELY QUESTIONS AND ANSWERS (1-15)

- In a school, 220 students offer Biology or Mathematics or both. 125 offer Biology and 110 mathematics. How many offer Biology but not Mathematics?

**Ans: 110**

2. Simplify 52.4−5.7−3.45−1.75

**Ans: 41.5**

3. (0.21×0.072×0.00054)(0.21×0.072×0.00054) ÷(0.006×1.68×0.063),÷(0.006×1.68×0.063), correct to 4.s.f

**Ans: 0.01286**

4. For the figure below, |QR| = 10 m, |SR| = 8 m, < QPS = 30°, < QRP = 90° and |PS| = x. Find x.

**Ans: 9.32**

5. Find the value of **k** if **y – 1** is a factor of y^{3} + 4y^{2} + ky – 6

**Ans: 1**

6. Find the number of sides of a regular polygon whose interior angle is twice the exterior angle.

**Ans: 6**

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7. Find the sum to infinity of the following series 3 + 2 + 4 + 4/3 + 8/9 + 16/27 + ……

**Ans: 9**

8. If y = 5cos(-6x), dx/dy is

**Ans: 30sin(-6x)**

9. *y* varies directly as *w ^{2}*. When y = 8, w = 2. Find y when w = 3

**Ans: 18**

10. Find the variance of the numbers k, k + 1, k + 2.

**Ans: 2/3**

11. If x varies directly as √n and x = 9 when n = 9, find x when n = (17/9)

**Ans: √17**

12. The diagram is a circle centre O. If < SPR = 2m and < SQR = n, express m in terms of n

**Ans: n/2**

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13. What is the solution of (x−5/x+3) < 1

**Ans: -3 < x < 1**

14. A trader bought goats for ₦4000 each. He sold them for ₦180,000 at a loss of 25. How many goats did he buy?

**Ans: 60**

15. Find the number of ways of selecting 88 subjects from 1212 subjects for an examination.

**Ans: 495**

##### MORE JAMB REPEATED PAST QUESTIONS AND ANSWERS IN MATHEMATICS | LIKELY QUESTIONS AND ANSWERS (16-30)

16. The 4th term of an A.P. is 13 while the 10th term is 31. Find the 24th term.

**Ans: 73**

17. A chord of a circle subtends an angle of 12° degrees at the centre of a circle of diameter 4√3 cm. Calculate the area of the major sector.

**Ans: 8 π cm ^{2}**

18. What is the common ratio of the G.P. (√10+√5)+(√10+2√5)...?

**Ans: √2**

19. A bucket is 12 cm in diameter at the top, 8 cm in diameterat the bottom and 4 cm deep. Calculate its volume.

**Ans: 304π/3 cm ^{3}**

20. Find the coordinates of the mid-point of x and y intercepts of the line 2y = 4x – 8

**Ans:** **(1, -2)**

21. A triangle has angles 30∘, 15∘ and 135∘, the side opposite to the angle 30∘ is length 6cm. The side opposite to the angle 135∘∘ is equal to

**Ans: 6√2cm**

22. Find the rate of change of the volume, V of a sphere with respect to its radius, r when r=1.

**Ans: 4π**

23. Teams P and Q are involved in a game of football. What is the probability that the game ends in a draw?

**Ans: 1/4**

24. Given the scores: 4,7,8,11,13,8 with corresponding frequencies: 3,5,2,7,2,1 respectively. The mean score is

**Ans: 8.7**

25. The difference between the length and width of a rectangle is 6cm and the area is 135cm². What is the length?

**Ans: 15cm**

26. The derivative of \cosecx is

**Ans: −cotx\cosecx**

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

**Ans:1.0**

28. Given distribution of color beads: blue, black, yellow, white and brown with frequencies 1,2,3,4, and 5 respectively. Find the probability that a bead picked at random will be blue or white.

**Ans: 1/3**

29. Differentiate (2x+5)²(x−4) with respect to x.

**Ans: (2x+5)(6x−11)**

30. Find the area of the curved surface of a cone whose base radius is 6cm and whose height is 8cm (Take \π=22/7).

**Ans: 188.57cm²**

##### JAMB REPEATED PAST QUESTIONS AND ANSWERS IN MATHEMATICS | LIKELY QUESTIONS AND ANSWERS (31-50)

31. If the mean of 4, y, 8 and 10 is 7. Find Y?

**A** 6 – **ANS**

**B** 10

**C** 7

**D** 9

**A** 45

**B** 10 – **ANS**

**C** 35

**D** 30

33. If line p = 5x + 3 is parallel to line p = wx + 5. Find the value of w.

**A** 7

**B** 3

**C** 6

**D** 5 – **ANS**

The pie chart above shows the distribution of subjects offered by students in SSS III level. If 80 students enrolled in the class. What is the size of the angle of the sector in economics?

**A** 24^{o}

**B** 39^{o}

**C** 32^{o }– **ANS**

**D** 36^{o}

**A** 32

**B** 36

**C** 33

**D** 40 – **ANS**

36.A number of pencils were shared out among Bisi, Sola and Tunde in the ratio of 2:3:5 respectively. If Bisi got 5, how many were shared out?

**A** 15

**B** 25 – **ANS**

**C** 30

**D** 50

^{o}at the centre of a circle radius 12cm. Calculate the length of the arc.

**A** 6πcm

**B** 2πcm – **ANS**

**C** 3cm

**D** 9πcm

^{o}at the centre of the circle. Find the radius of the circle.

**A** 24cm

**B** 28cm

**C** 36cm – **ANS**

**D** 32cm

39.The mean of 2-t, 4+t, 3-2t, 2+t and t-1 is

**A** 2 – **ANS**

**B** t

**C** -t

**D** -2

**A** 10

**B** 5

**C** 15

**D** 20 – **ANS**

**A**q = 18 –

**ANS**

**B** p <1

**C** p = 18

**D** q < 1

42. The 3rd term of an arithmetic progression is -9 and the 7th term is -29. Find the 10th term of the progression

**A** -44 – **ANS**

**B** -165

**C** 165

**D** 44

**A** 6 – **ANS**

**B** 12

**C** 3

**D** 5

**A** -1 < x < 5

**B** -1 < x 5 – **ANS**

**C** -1 ≤ x ≤ 6

**D** -1 ≤ x < 6

**A** 100

**B** 200**– ANS**

**C** 30

**D** 50

46.If three unbiased coins are tossed, find the probability that they are all heads

**A** 2

**B** 3

**C** 9

**D**

47. A man bought a second-hand photocopying machine for N34000. He serviced i at a cost N2000 and then sold it at a profit of 15%. What was the selling price?

**A** N37550

**B** N40400

**C** N41400 – **ANS**

**D** 42400

From the diagram above, find x

**A** 75^{o}

**B** 65^{o }**– ANS**

**C** 55^{o}

**D** 50^{o}

49.

From the cyclic quadrilateral TUVW above, find the value of x

**A** 20^{o}

**B** 23^{o}

**C** 24^{o }**-ANS**

**D** 26^{o}

**A** 0.25%

**B** 0.01%

**C** 0.80% – **ANS**

**D** 0.40%

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