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WAEC Past Questions and Answers - Page 3005

15,021.

To preserve individual liberies, the judiciary should?

A.

consist of honest and impartial judges

B.

be appointed by the executives

C.

be prosecuted for judgement against the executive

D.

participate in partisan politics

Correct answer is A

It is vitally important in a democracy that individual judges and the judiciary as a whole are impartial and independent of all external pressures and of each other so that those who appear before them and the wider public can have confidence that their cases will be decided fairly and in accordance with the law.

15,022.

The diameter of a bicycle wheel is 42cm. If the wheel makes 16 complete revolution, what will be the total distance covered by the wheel? [Take π227

A.

672cm

B.

1056cm

C.

2112cm

D.

4224cm

Correct answer is C

d = 42cm

Circumference = πd=227×42cm

= 22 x 6cm = 132cm

Total distance covered = circumference x number of revolutions

= 132cm x 16 = 2112cm

15,023.

Which of the following alternatives is a feature of a federation

A.

unwritten constitution

B.

unicameral legislature

C.

supremacy of the constitution

D.

right to secede

Correct answer is C

Supremacy of the Constitution: The Constitution is binding on the Federal and the State Governments. The Central Government as well as the State Governments derives their powers from the Constitution. Also, neither of the two Governments should be in a position to override the provisions of the Constitution related to the powers and status enjoyed by the other.

15,024.

Factorize x2 - 2x - 3xy completely

A.

(x - 2)(3x - y)

B.

(x - 3y)(x - 2)

C.

(x - 3y)(x - 3y)

D.

(3x + y)(x - 2)

Correct answer is B

x2 - 2x - 3xy + 6y = x(x - 2) -3y(x - 2)

= (x - 3y)(x - 2)

15,025.

If (2x + 3)3 = 125, find the value of x

A.

1

B.

2

C.

3

D.

4

Correct answer is A

(2x + 3 )2 = 125

2n + 3 = 3125

2x + 3 = 5

2x = 5 - 3

x = 22

= 1