NECO SSCE - General Mathematics - 2004 (Objective)

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Question 1 Report

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

68cm Correct answer

72cm

80cm

88cm

92cm

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Question 2 Report

Simplify (216\(\frac{1}{3}\))^-2

\(\frac{1}{36}\) Correct answer

\(\frac{1}{18}\)

\(\frac{1}{13}\)

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

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

Answer Details

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Read lesson note on Number Bases (WAEC)

Fractions, Decimals And Approximations

Number Bases

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Question 3 Report

A bag contains p dozens of bananas and 3q of these proved to be bad. If I buy one third of the goods ones, how many do I get?

P -3q

\(\frac{1}{3}\) (p - 3q)

4p - q Correct answer

12p - 3q

Answer Details

Read lesson note on Solution Of Linear Equations (WAEC)

Read lesson note on Quadratic Equations (WAEC)

Solution Of Linear Equations

Quadratic Equations

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Question 4 Report

Evaluate ut - \(\frac{1}{2}\)ft² when t = 5, u = -20 and f = 10

225

-75

-125

-225 Correct answer

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Question 5 Report

Evaluate (Log₁₃ - log₅) ÷ X(log₅-log₁₃) without using tables

–x

X-1

–X^-1 Correct answer

-1

Answer Details

Read lesson note on Logarithms (WAEC)

Logarithms

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Question 6 Report

Express the product of 0.007 and 0.057 to two significant figures

0.0004 Correct answer

0.00039

0.004

0.0039

0.04

Answer Details

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Read lesson note on Modular Arithmetic (WAEC)

Fractions, Decimals And Approximations

Modular Arithmetic

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Question 7 Report

A sales boy gave a change of N75.00 to a buyer instead of N80.00, calculate his percentage error, correct to one decimal place?

6.00%

6.20%

6.30% Correct answer

6.60%

6.70%

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Question 8 Report

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

10001\(_{two}\)

11001\(_{two}\)

110001\(_{two}\)

11010\(_{two}\) Correct answer

11100\(_{two}\)

Answer Details

Read lesson note on Number Bases (WAEC)

Read lesson note on Number Bases (JAMB)

Number Bases

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Question 9 Report

The bearing of Y from X is 0850. What is the bearing of X from Y?

005°

095°

185°

265° Correct answer

275°

Answer Details

Read lesson note on Bearings (WAEC)

Bearings

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Question 10 Report

The first term of an A.P is equal to thrice the common difference, what is the sixth term of the A.P, if the common difference is 8?

64 Correct answer

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 11 Report

Four pupils have an average age of 12years and two other pupils of average age of 10.5years are added. What is the average age of the six pupils?

10.5yrs.

11yrs.

11.5 yrs. Correct answer

12yrs.

12.5yrs.

Answer Details

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Read lesson note on Surds (radicals) (WAEC)

Read lesson note on Financial Arithmetic (WAEC)

Fractions, Decimals And Approximations

Surds (radicals)

Financial Arithmetic

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Question 12 Report

If y varies inversely as x², how does x vary with y?

x varies inversely as y²

x varies inversely as \(\sqrt{y}\) Correct answer

x varies directly as y²

x varies directly as \(\sqrt{y}\)

x varies directly as y

Answer Details

Read lesson note on Variation (JAMB)

Variation

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Question 13 Report

The nth term of a sequence is given as 4 x 3(3 - n). Calculate the third term.

4 Correct answer

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 14 Report

A car travels at an average speed of 75km/h. Find its speed in metres per second.

270m/s

208m/s

27.0m/s

20.8m/s Correct answer

2.08m/s

Answer Details

Read lesson note on Lengths And Perimeters (WAEC)

Read lesson note on Areas (WAEC)

Lengths And Perimeters

Areas

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Question 15 Report

Express the quotient of 0.422 and 0.004 in standard form

1.055 × 10² Correct answer

10.55 × 10¹

105 × 10⁰

10.55 × 10^-1

1.055 × 10^-2

Answer Details

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Read lesson note on Modular Arithmetic (WAEC)

Fractions, Decimals And Approximations

Modular Arithmetic

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Question 16 Report

Find the value of t such that the expression \(\frac{1}{t}\) + \(\frac{4}{3}\) - \(\frac{5}{6t}\) + 1 is equal to zero

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

\(\frac{1}{4}\)

- \(\frac{3}{2}\) Correct answer

\(\frac{7}{6}\)

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

Answer Details

Read lesson note on Number Bases (WAEC)

Number Bases

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Question 17 Report

If log₁₀² = 0.3010 and log₁₀³ = 0.4771, simplify: (Log₁₀⁸-log₉²) ÷ (Log₁₀⁹ - log₁₀²)

0.0784

-4

-0.0784 Correct answer

Answer Details

Read lesson note on Logarithms (WAEC)

Logarithms

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Question 18 Report

The 4th term of a G.P is 3 and its first term is 81. What is its common ratio?

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

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

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

-3

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 19 Report

Find x if (x - 2)² = 1\(\frac{7}{9}\)

\(\frac{2}{3}\) or \(\frac{2}{7}\)

3\(\frac{1}{3}\) or \(\frac{2}{3}\) Correct answer

3\(\frac{7}{9}\) or \(\frac{2}{7}\)

3\(\frac{1}{3}\) or \(\frac{7}{9}\)

\(\frac{3}{7}\) or \(\frac{2}{9}\)

Answer Details

Read lesson note on Quadratic Equations (WAEC)

Quadratic Equations

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Question 20 Report

Two angles of a triangle are 450 each and its longest side is 12cm. Find the length of one of the other sides

12cm

9\(\sqrt{2}\)cm

6\(\sqrt{2}\)cm Correct answer

6cm

3\(\sqrt{2}\)cm

Answer Details

Read lesson note on Angles (WAEC)

Read lesson note on Triangles And Polygons (WAEC)

Angles

Triangles And Polygons

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Question 21 Report

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

50° 54′

35° 06′

30° 00′

290 90′

29° 54′ Correct answer

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Read lesson note on Angles Of Elevation And Depression (WAEC)

Angles Of Elevation And Depression

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Question 22 Report

Divide the LCM of 15abc and 20a\(^2\)bc by their HCF

10a

12a Correct answer

5abc

12a²bc

60a²bc

Answer Details

Read lesson note on Sine, Cosine And Tangent Of An Angle (WAEC)

Read lesson note on Number Bases (WAEC)

Read lesson note on Modular Arithmetic (WAEC)

Sine, Cosine And Tangent Of An Angle

Number Bases

Modular Arithmetic

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Question 23 Report

If cos x = 4/5, 0° \( \leq \) x \( \leq \) 90°, find the value of (1 + tan x)/(1 - tan x)

7 Correct answer

\(\frac{7}{16}\)

\(\frac{9}{25}\)

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Question 24 Report

Find the surface area of a sphere whose radius is 3.5cm, correct your answer to one decimal place (π = \(\frac{22}{5}\))

12.8cm²

25.7cm²

77.0cm²

154.0cm² Correct answer

179.7cm²

Answer Details

Read lesson note on Volumes (WAEC)

Volumes

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Question 25 Report

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?

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

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

\(\frac{16}{18}\)

\(\frac{3}{8}\)

\(\frac{4}{9}\)

Answer Details

Read lesson note on Probability (WAEC)

Read lesson note on Surds (radicals) (WAEC)

Probability

Surds (radicals)

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Question 26 Report

One of the interior angles of a regular polygon is 120°. Find the number of sides of the polygon

6 Correct answer

Answer Details

Read lesson note on Triangles And Polygons (WAEC)

Triangles And Polygons

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Question 27 Report

What must be added to b²-3ab to make it a perfect square?

-3a

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

\(\frac{9}{4}\)

\(\frac{9a}{4}\)

\(\frac{9^2}{4}\) Correct answer

Answer Details

Read lesson note on Number Bases (WAEC)

Number Bases

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Question 28 Report

Solve the equation: \(\frac{3}{[2(x - 2)]} - \frac{2}{[3(2 - x)]} = 0\)

2 Correct answer

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

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

-3

Answer Details

Read lesson note on Solution Of Linear Equations (WAEC)

Read lesson note on Algebraic Fractions (WAEC)

Read lesson note on Fractions, Decimals, Approximations And Percentage (JAMB)

Solution Of Linear Equations

Algebraic Fractions

Fractions, Decimals, Approximations And Percentage

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Question 29 Report

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

5\(\sqrt{15}\)cm²

7\(\sqrt{15}\)cm²

21\(\sqrt{3}\)cm²

21\(\sqrt{5}\)cm²

21\(\sqrt{15}\)cm² Correct answer

Answer Details

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Question 30 Report

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

acute angle

obtuse angle

reflex angle

right angle Correct answer

supplementary angle

Answer Details

Read lesson note on Circles (WAEC)

Circles

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Question 31 Report

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

8.7796 × 10⁵

8.7796 × 10⁴

8.7796 × 10³

8.7796 × 10^-3

8.7796 × 10^-5 Correct answer

Answer Details

Read lesson note on Fractions, Decimals And Approximations (WAEC)

Fractions, Decimals And Approximations

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Question 32 Report

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?

6 Correct answer

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 33 Report

The roots of a quadratic equation in x, are -m and 2n. Fine equation.

x² - x(2n-m) – 2mn = 0 Correct answer

x² + x(2n - m) - 2mn = 0

x² + x(m - 2n) + 2mn = 0

X² + x (m + 2n ) + 2mn = 0

x² - x (m - 2n) - 2mn = 0

Answer Details

Read lesson note on Differentiation (JAMB)

Read lesson note on Quadratic Equations (WAEC)

Differentiation

Quadratic Equations

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Question 34 Report

If the mean of the following set of data, 2, 3,3,3, 2,4 4 and 3 is divided by its mode, the result is:

1 Correct answer

Answer Details

Read lesson note on Linear Inequalities (WAEC)

Read lesson note on Statistics (WAEC)

Read lesson note on Progression (JAMB)

Linear Inequalities

Statistics

Progression

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Question 35 Report

The expression 4x² - 4 has the following as its factors EXCEPT

x - 1

x + 1

x² -1

4x + 1 Correct answer

4x - 4

Answer Details

Read lesson note on Algebraic Expressions (WAEC)

Read lesson note on Quadratic Equations (WAEC)

Algebraic Expressions

Quadratic Equations

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