41. The wheel of a tractor has diameter 1.4 m. What distance does it cover in 100 complete revolutions? (Take π = 22/7) A. 140 m B. 220 m C. 280 m D. 440 cm
42. If P = { 1, 3, 5, 7, 9} and Q = { 2, 4, 6, 8, 10} are elements of P^1∩Q^1? A. { 1, 3, 5, 7, 9} B. {2, 4, 6, 8, 10} C. ∅ D. {1, 2, 6, 8, 10}
43. In the diagram, what is x + y in terms of z?
A. 1800 – z B. 1800 + z C. z – 1800 D. z
44. The values of three angles at a point are 3y – 450, y + 250 and y0. Find the value of y. A. 400 B. 580 C. 680 D. 760
45. A rectangular carpet 2.5 m long and 2.4 m wide covers 5% of a rectangular floor. Calculate the area of the floor. A. 30 m2 B. 57 m2 C. 120 m2 D. 225 m2
46. In the diagram, │XY│ = 12 cm, │XZ│ = 9 cm, │ZN│ = 3 cm and ZY ││NM. Calculate │MY│.
A. 3 cm
47. Which of the following is not a measure of central tendency? A. mean B. mode C. range D. median
48. The temperature in a chemical plant was –50C at 2.00am. The temperature fell by 60C and then rose again by 70C. What was the final temperature? A. –60C B. –40C C. 40C D. 80 C.
49. Simplify: 20/(5√(28-2√63) ) A. (5√7)/7 B. (5√6)/7
C. (7√5)/7 D. (7√7)/7
50. A ladder 16 m long leans against an electric pole. If the ladder makes an angle of 650 with the ground, how far up the electric pole does its top reach? A. 6.8 m B. 14.5 m C. 17.7 m D. 34.3 m.