Mathematics 2021 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.
16. P(-6, 1) and Q(6, 6) are the two ends of the diameter of a given circle. Calculate the radius.
- A. 6.5 units
- B. 13.0 units
- C. 3.5 units
- D. 7.0 units
17. The angle of a sector of s circle, radius 10.5cm, is 48°, Calculate the perimeter of the sector
- A. 8.8cm
- B. 25.4cm
- C. 25.6cm
- D. 29.8cm
18. Find the length of a side of a rhombus whose diagonals are 6cm and 8cm
- A. 8cm
- B. 5cm
- C. 4cm
- D. 3cm
19. Each of the interior angles of a regular polygon is 140°. How many sides has the polygon?
- A. 9
- B. 8
- C. 7
- D. 5
20. A cylinder pipe, made of metal is 3cm thick. If the internal radius of the pope is 10cm. Find the volume of metal used in making 3m of the pipe.
- A. 153πcm3
- B. 207πcm3
- C. 15300πcm3
- D. 20700πcm3
21. 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
22. 4, 16, 30, 20, 10, 14 and 26 are represented on a pie chart. Find the sum of the angles of the bisectors representing all numbers equals to or greater than 16
- A. 48o
- B. 84o
- C. 92o
- D. 276o
23. 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. 38
- D. 30
24. 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. 2/15
- C. 1/2
- D. 1/4
25. Find the probability that a number selected at random from 41 to 56 is a multiply of 9
- A. 1/8
- B. 2/15
- C. 3/16
- D. 7/8
26. Musa borrows N10.00 at 2% per month simple interest and repays N8.00 after 4 months. How much does he still owe?
- A. N10.80
- B. N10.67
- C. N2.80
- D. N2.67
27. Simplify 2log2/5 – log72/125 + log 9
- A. 1 – 4 log3
- B. -1 + 2 log 3
- C. -1 + 5 log2
- D. 1 – 2log 2
28. A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed of Wkm per hour. Find its average speed from Calabar to Benin
- A. (\frac{(p + q)}{pw + qu}\)
- B. \(\frac{uw(p + q)}{pw + qu}\)
- C. \(\frac{uw(p + q)}{pw}\)
- D. \(\frac{uw}{pw + qu}\)
29. If w varies inversely as uv / v+u and is equal to 8 when
u = 2 and v = 6, find a relationship between u, v, w.
- A. uvw = 16(u + v)
- B. 16uv = 3w(u + v)
- C. uvw = 12(u + v)
- D. 12uvw = u + v
30. If g(x) = x2+ 3x find g(x + 1) – g(x)
- A. (x + 2)
- B. 2(x + 2)
- C. (2x + 1)
- D. (x2 + 4)
