Neco Mathematics Past Questions and Answers

Question 46:

• NECO 2002

The length, breadth and height of a cuboid are 8cm, 7\(\frac{1}{2}\)cm and 6\(\frac{1}{2}\) cm respectively. What Is its volume in m³ (leave your answer in standard form)?

A. 3.9 × 10^-1m³
B. 3.9 × 10^-2m³
C. 3.9 × 10^-3m³
D. 3.9 × 10^-4m³
E. 3.9 × 10^-5m³

Question 47:

• NECO 2002

Given that the universal set U={14,15,16,17,18,19,20}, J ={16,19,20} and K= {14,15,18}, find (J' ∩ K')1.

A. {17}
B. {16, 17, 19, 20}
C. {1, 4, 15, 17, 18}
D. {14, 15, 16, 18, 19, 20}
E. {14, 15, 16, 17, 18, 19, 20}

Question 48:

• NECO 2002

Evaluate 1.25 × 102 × 0.125 × 103 × 12.5 × 10^-4 leaving your answer in standard form

A. 1.995 × 10³
B. 1.95 × 10²
C. 1.95 × 10¹
D. 1.95 × 10^-2
E. 1.95 × 10^-3

Question 49:

• NECO 2002

What is the volume of a cube if the diagonal of one of the sides is \(\sqrt{50}\)cm?

A. 7.07cm\(^3\)
B. 50.0cm\(^3\)
C. 125.0cm\(^3\)
D. 353.4cm\(^3\)
E. 625.0cm\(^3\)

Question 50:

• NECO 2002

A cone was developed from a sector of a circle with radius10cm and an angle at the centre of 108°. What is the radius of the cone?

A. 9.0cm
B. 8.5cm
C. 7.2cm
D. 4.3cm
E. 3.0cm