NECO Past Questions and Answers - Page 127

631.

If 2x : ( x + 1) = 3 : 2, what is the value of x?

A.

\(\frac{1}{2}\)

B.

1

C.

1\(\frac{1}{2}\)

D.

3

E.

3\(\frac{1}{2}\)

Correct answer is D

No explanation has been provided for this answer.

632.

Two fair dice are tossed together once. What is the probability of getting a total of at least 9 from the outcome?

A.

\(\frac{1}{9}\)

B.

\(\frac{1}{6}\)

C.

\(\frac{5}{18}\)

D.

\(\frac{1}{3}\)

E.

\(\frac{13}{18}\)

Correct answer is C

No explanation has been provided for this answer.

634.

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

Correct answer is C

No explanation has been provided for this answer.

635.

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

Correct answer is C

No explanation has been provided for this answer.