Mathematics Past Questions | JAMB, WAEC, NECO and Post UTME Past Questions


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Question 11

Find the variance of \(2, 6, 8, 6, 2,\) and \(6.\)

Options

A) \(6\)

B) \(5\)

C) \(\sqrt{6}\)

D) \(\sqrt{5}\)

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Question 12

Find the number of ways of selecting \(8\) subjects from \(12\) subjects for an examination.

Options

A) \(490\)

B) \(495\)

C) \(496\)

D) \(498\)

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Question 13

Find the range of these fractions:
\(\frac{1}{6}, \frac{1}{3}, \frac{3}{2}, \frac{2}{3}, \frac{8}{9}\) and \(\frac{4}{3}.\)

Options

A) \(\frac{3}{4}\)

B) \(\frac{5}{6}\)

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

D) \(\frac{4}{3}\)

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Question 14

Without using tables, evaluate \((343)^{\frac{1}{3}} \times (0.14)^{-1} \times (25)^{\frac{-1}{2}}\)

Options

A) \(10\)

B) \(12\)

C) \(8\)

D) \(7\)

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Question 15

In a school, \(220\) students offer Biology or Mathematics or both. \(125\) offer Biology and \(110\) mathematics. How many offer Biology but not Mathematics?

Options

A) \(95\)

B) \(80\)

C) \(125\)

D) \(110\)

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Question 16

Simplify \(52.4 - 5.7 - 3.45 - 1.75\)

Options

A) \(41.4\)

B) \(41.5\)

C) \(42.1\)

D) \(42.2\)

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Question 17

Simplify \((\sqrt{0.7} + \sqrt{70})^2\)

Options

A) \(84.7\)

B) \(70.7\)

C) \(217.7\)

D) \(168.7\)

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Question 18

Evaluate:
\((0.21 \times 0.072 \times 0.00054)\) \(\div (0.006 \times 1.68 \times 0.063),\) correct to 4.s.f

Options

A) \(0.01286\)

B) \(0.01285\)

C) \(0.1286\)

D) \(0.1285\)

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Question 19

A trader bought goats for \(₦4000\) each. He sold them for \(₦180,000\) at a loss of \(25%.\) How many goats did he buy?

Options

A) \(60\)

B) \(50\)

C) \(45\)

D) \(36\)

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Question 20

If \(\frac{dy}{dx} = 2x - 3\) and \(y = 3\) when \(x = 0,\) find \(y\) in terms of \(x.\)

Options

A) \(2x^2 - 3x\)

B) \(x^2 - 3x\)

C) \(x^2 - 3x - 3\)

D) \(x^2 - 3x + 3\)

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