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Mathematics Past Questions

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48 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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48 questions

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Question 21

waec 2013

Four oranges sell for Nx and three mangoes sell for Ny. Olu bought 24 oranges and 12 mangoes. How much did he pay in terms of x and y?

AN94x + 6y)

BN(6x + 4y)

CN(24x + 12y)

DN(12x + 24y)

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Question 22

waec 2013

A sales boy gave a change of N68 instead of N72. Calculate his percentage error

A4%

B5\(\frac{5}{9}\)%

C5\(\frac{15}{17}\)%

D7%

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Question 23

waec 2013

If \(\sqrt{50} - K\sqrt{8} = \frac{2}{\sqrt{2}}\), find K

A-2

B-1

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Question 24

waec 2013

If Un = n(n² + 1), evaluate U5 - U4

A18

B56

C62

D80

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Question 25

waec 2013

Simplify \(\frac{1\frac{7}{8} \times 2\frac{2}{5}}{6\frac{3}{4} \div \frac{3}{4}}\)

B4\(\frac{1}{2}\)

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

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Question 26

waec 2013

In what number base is the addition 465 + 24 + 225 = 1050?

Aten

Bnine

Ceight

Dseven

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Question 27

waec 2013

If 9^{(2 - x)} = 3, find x

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

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

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Question 28

waec 2013

Multiply 2.7 x 10^-4 by 6.3 x 10⁶ and leave your answers in standard form

A1.7 x 10³

B1.70 x 10³

C1.701 x 10³

D17.01 x 10³

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