Neco Mathematics Past Questions and Answers

Question 26:

• NECO 2001

An arc of a circle subtends an angle of 75° at the centre of the circle. If the diameter of the circle is 7cm, what Is the length of the arc? (take π = 3.142)

A. 4.58 cm
B. 8.02 cm
C. 16.04 cm
D. 32.08 cm
E. 34 cm

Question 27:

• NECO 2001

If n{A} = 6, n{B} = 5 and n{A ∩ B} = 2, find n{A ∪ B}

A. 7
B. 8
C. 9
D. 13
E. 15

Question 28:

• NECO 2001

If 3 boys shared x oranges among themselves in the ratio 3:5:8, and smallest share was 45 oranges, find the value of x

A. 75
B. 120
C. 165
D. 195
E. 240

Question 29:

• NECO 2001

Find the value of k such that \(t^2\) + kt + \(\frac{25}{4}\) is a perfect square

A. 5
B. 3
C. \(\frac{5}{2}\)
D. \(\frac{5}{4}\)
E. \(\frac{1}{5}\)

Question 30:

• NECO 2001

The angle of elevation of the top T of a pole from a point X on the horizontal ground is 32°, if X is 68 m away from the foot F of the pole, calculate the height FT of the pole, correct to one decimal place.

A. 128.3m
B. 108.8m
C. 80.2m
D. 57.7m
E. 42.5m