NECO Past Questions and Answers - Page 124

616.

Bello chooses a number randomly from 1 to 10. What is the probability that it is either odd or prime?

A.

\(\frac{1}{10}\)

B.

\(\frac{2}{5}\)

C.

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

D.

\(\frac{3}{5}\)

E.

\(\frac{9}{10}\)

Correct answer is D

No explanation has been provided for this answer.

617.

In proving the congruence of two triangles, which of the following is not important?

A.

two sides and the included angles

B.

two angles and a side

C.

three sides

D.

three angles

E.

right angle, hypotenuse and another side

Correct answer is B

No explanation has been provided for this answer.

618.

Rationalize the expression \(\frac{(7 - \sqrt{3})}{(13 - \sqrt{3})}\)

A.

(44 + 3\(\sqrt{3}\)) ÷ 83

B.

(44 + 2\(\sqrt{3}\)) ÷ 83

C.

(44 - 3\(\sqrt{3}\)) ÷ 83

D.

(44 - 4\(\sqrt{3}\)) ÷ 83

E.

(44 - 2\(\sqrt{3}\)) ÷ 83

Correct answer is C

No explanation has been provided for this answer.

619.

Rationalize the expression \(\frac{(7 - \sqrt{3})}{(13 - \sqrt{3})}\)

A.

(44 + 3\(\sqrt{3}\)) ÷ 83

B.

(44 + 2\(\sqrt{3}\)) ÷ 83

C.

(44 - 3\(\sqrt{3}\)) ÷ 83

D.

(44 - 4\(\sqrt{3}\)) ÷ 83

E.

(44 - 2\(\sqrt{3}\)) ÷ 83

Correct answer is C

No explanation has been provided for this answer.

620.

A chord XY of a circle with centre O and radius 5.32cm has ∠XOY = 140°. What is the length of the chord to the nearest centimetre?

A.

10cm

B.

6cm

C.

5cm

D.

3cm

E.

1cm

Correct answer is A

No explanation has been provided for this answer.