Neco Mathematics Past Questions and Answers

Question 86:

• NECO 2004

Evaluate \(1011_{two}\) + \(1101_{two}\) + \(1001_{two}\) - \(111_{two}\)

A. 10001\(_{two}\)
B. 11001\(_{two}\)
C. 110001\(_{two}\)
D. 10010\(_{two}\)
E. 10001\(_{two}\)

Question 87:

• NECO 2004

Find the area of a triangle ABC such that a = 16cm, b = 14cm, c = 12cm, leave your answer in surd form

A. 5\(\sqrt{15}\)cm²
B. 7\(\sqrt{15}\)cm²
C. 21\(\sqrt{3}\)cm²
D. 21\(\sqrt{5}\)cm²
E. 21\(\sqrt{15}\)cm²

Question 88:

• NECO 2004

If the first term of an AP is 1.2 and the common difference is also 2, what is the mean of the first five terms?

A. 2
B. 4
C. 6
D. 8
E. 10

Question 89:

• NECO 2004

The angle subtended by a diameter of a circle at the circumference is a/an

A. Acute angle
B. Obtuse angle
C. Reflex angle
D. Right angle
E. Supplementary angle

Question 90:

• NECO 2004

Calculate (0.05 × 0.025) ÷ (4.25 × 3.35) and express your answer in standard form

A. 8.7796 × 10⁵
B. 8.7796 × 10⁴
C. 8.7796 × 10³
D. 8.7796 × 10^-3
E. 8.7796 × 10^-5