NECO SSCE - General Mathematics - 2004 (Objective)

Question 1 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?

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

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

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

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

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

Answer Details

Read lesson note on Probability (WAEC)

Read lesson note on Surds (radicals) (WAEC)

Probability

Surds (radicals)

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Question 2 Report

Express the product of 0.007 and 0.057 to two significant figures

0.0004

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 3 Report

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

-3a

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

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

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

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

Answer Details

Read lesson note on Number Bases (WAEC)

Number Bases

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Question 4 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%

6.60%

6.70%

Answer Details

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Question 5 Report

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

005°

095°

185°

265°

275°

Answer Details

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Bearings

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Question 6 Report

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

–x

X-1

–X^-1

-1

Answer Details

Read lesson note on Logarithms (WAEC)

Logarithms

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Question 7 Report

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

Answer Details

Read lesson note on Triangles And Polygons (WAEC)

Triangles And Polygons

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Question 8 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

179.7cm²

Answer Details

Read lesson note on Volumes (WAEC)

Volumes

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Question 9 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

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 10 Report

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

10001\(_{two}\)

11001\(_{two}\)

110001\(_{two}\)

11010\(_{two}\)

11100\(_{two}\)

Answer Details

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Read lesson note on Number Bases (JAMB)

Number Bases

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Question 11 Report

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

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

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

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

-3

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 12 Report

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

0.0784

-4

-0.0784

Answer Details

Read lesson note on Logarithms (WAEC)

Logarithms

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Question 13 Report

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

68cm

72cm

80cm

88cm

92cm

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Question 14 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

Answer Details

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

Fractions, Decimals And Approximations

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Question 15 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?

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 16 Report

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

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

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

Answer Details

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Question 17 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

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 18 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?

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 19 Report

Express the quotient of 0.422 and 0.004 in standard form

1.055 × 10²

10.55 × 10¹

105 × 10⁰

10.55 × 10^-1

1.055 × 10^-2

Answer Details

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Fractions, Decimals And Approximations

Modular Arithmetic

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Question 20 Report

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

acute angle

obtuse angle

reflex angle

right angle

supplementary angle

Answer Details

Read lesson note on Circles (WAEC)

Circles

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Question 21 Report

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

225

-75

-125

-225

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Question 22 Report

Find x if (x - 2)² = 1\(\frac{7}{9}\)

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

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

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 23 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

Answer Details

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Question 24 Report

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

x² - x(2n-m) – 2mn = 0

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

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Differentiation

Quadratic Equations

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Question 25 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.

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 26 Report

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

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

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

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

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

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

Answer Details

Read lesson note on Number Bases (WAEC)

Number Bases

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Question 27 Report

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

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

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

-3

Answer Details

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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 28 Report

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

10a

12a

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 29 Report

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

x - 1

x + 1

x² -1

4x + 1

4x - 4

Answer Details

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Read lesson note on Quadratic Equations (WAEC)

Algebraic Expressions

Quadratic Equations

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Question 30 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

12p - 3q

Answer Details

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Read lesson note on Quadratic Equations (WAEC)

Solution Of Linear Equations

Quadratic Equations

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Question 31 Report

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

x varies inversely as y²

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

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 32 Report

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

Answer Details

Read lesson note on Sequence And Series (WAEC)

Sequence And Series

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Question 33 Report

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

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

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

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

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

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

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 34 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′

Answer Details

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

Angles Of Elevation And Depression

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Question 35 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:

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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