Neco Mathematics 2005 Past Questions and Answers

Question 6:

• NECO 2005

3 - 7, 8 - 12, 13 - 17, 18 - 22. Which of the following is/are true?
I. The class Interval is 4
II. The class boundaries are 2.5, 7.5, 12.5, 18.5, 22.5
III. The mid-marks are 5, 10, 15, and 20

A. I only
B. II only
C. III only
D. I and II only
E. II and III only

Question 7:

• NECO 2005

T varies directly as D and inversely as A. Given that T = 6, D = 3, and A = 2, find A when T = 3 and D = 6.

A. 4
B. 6
C. 8
D. 12
E. 24

Question 8:

• NECO 2005

A chord 20cm long subtends an angle of 60° at the circumference of a circle, what is the diameter of the circle the nearest cm?

A. 12cm
B. 20cm
C. 23cm
D. 60cm
E. 80cm

Question 9:

• NECO 2005

If 25a² = 5^-1 × 125. Find the value of a?

A. A = -1
B. A = 1
C. A = ±1
D. A = ±5
E. A = 25

Question 10:

• NECO 2005

The parallel sides of a trapezium are 13cm and 7cm. If the area of the trapezium is 50cm2, find the perpendicular distance between the parallel sides.

A. 5cm
B. 6cm
C. 7cm
D. 10cm
E. 12cm