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NECO Mathematics Past Questions & Answers - Page 16

76.

Find x if (x - 2)² = 1 $\frac{7}{9}$

A.

$\frac{2}{3}$ or $\frac{2}{7}$

B.

3 $\frac{1}{3}$ or $\frac{2}{3}$

C.

3 $\frac{7}{9}$ or $\frac{2}{7}$

D.

3 $\frac{1}{3}$ or $\frac{7}{9}$

E.

$\frac{3}{7}$ or $\frac{2}{9}$

View answer & explanation

Correct answer is B

No explanation has been provided for this answer.

77.

Express the product of 0.007 and 0.057 to two significant figures

A.

0.0004

B.

0.00039

C.

0.004

D.

0.0039

E.

0.04

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

78.

A man is 40m from the foot of a cliff of height 23m. Calculate the angle of elevation of the top of the cliff from the man

A.

50° 54′

B.

35° 06′

C.

30° 00′

D.

290 90′

E.

29° 54′

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.

79.

A bag Contains 2 red, 3 blue and 4 green identical balls. If two balls are picked at random one after the other without replacement, what is the probability that both are green?

A.

$\frac{1}{6}$

B.

$\frac{1}{3}$

C.

$\frac{16}{18}$

D.

$\frac{3}{8}$

E.

$\frac{4}{9}$

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

80.

The diagonals of a rhombus are 16cm and 30cm long. What is the perimeter of the rhombus

A.

68cm

B.

72cm

C.

80cm

D.

88cm

E.

92cm

View answer & explanation

Correct answer is A

No explanation has been provided for this answer.

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