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4,407 questions JAMB 2359 WAEC 1853 NECO 179 POST_UTME 6 CUSTOM 10

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4,407 questions

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Question 1821

jamb 1991

If w varies inversely as \(\frac{uv}{u + v}\) and is equal to 8 when

u = 2 and v = 6, find a relationship between u, v, w.

Auvw = 16(u + v)

B16ur = 3w(u + v)

Cuvw = 12(u + v)

D12uvw = u + v

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Question 1822

jamb 1991

A car travels from calabar to Enugu, a distance of P km with an average speed of U km per hour and continues to benin, a distance of Q km, with an average speed of Wkm per hour. Find its average speed from Calabar to Benin

A\(\frac{(p + q)}{pw + qu}\)

B\(\frac{uw(p + q)}{pw + qu}\)

C\(\frac{uw(p + q)}{pw}\)

D\(\frac{uw}{pw + qu}\)

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Question 1823

jamb 1991

Evaluate \(\frac{xy^2 - x^2y}{x^2 - xy}\) When x = -2 and y = 3

B-\(\frac{3}{5}\)

C\(\frac{3}{5}\)

D-3

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Question 1824

jamb 1991

Multiply (x² - 3x + 1) by (x - a)

Ax³ - (3 + a) x² + (1 + 3a)x - a

Bx³ - (3 - a)x² + 3ax - a

Cx³ - (3 - a)x² - (1 = 3a) - a

Dx³ + (3 - a)x² + (1 + 3a) - a

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Question 1825

jamb 1991

Rationalize \(\frac{2\sqrt{3} + 3 \sqrt{2}}{3\sqrt{2} - 2 \sqrt{3}}\)

A5 - 2\(\sqrt{6}\)

B5 + 2\(\sqrt{6}\)

C5\(\sqrt{6}\)

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Question 1826

jamb 1991

Simplify \(\frac{1}{1 + \sqrt{5}}\) - \(\frac{1}{1 - \sqrt{5}}\)

A- \(\frac{1}{2}\sqrt{5}\)

B\(\frac{1}{2}\sqrt{5}\)

C-- \(\frac{1}{4}\sqrt{5}\)

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Question 1827

jamb 1991

Simplify 2log \(\frac{2}{5}\) - log\(\frac{72}{125}\) + log 9

A1 - 4 log3

B-1 + 2 log 3

C-1 + 5 log2

D1 - 2log 2

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Question 1828

jamb 1991

What is the product of \(\frac{27}{5^1}\)(3)-3 and \(\frac{(1)^{-1}}{5}\)?

D\(\frac{1}{25}\)

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Question 1829

jamb 1991

If 3 gallons of spirit containing 20% water are added to 5 gallons of another spirit containing 15% water, what percentage of the mixture is water?

A2\(\frac{4}{5}\)%

B16\(\frac{7}{8}\)%

C18\(\frac{1}{8}\)%

D18\(\frac{7}{8}\)%

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Question 1830

jamb 1991

Musa borrows N10.00 at 2% per month simple interest and repays N8.00 after 4 months. How much does he still owe?

AN10.80

BN10.67

CN2.80

DN2.67

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Question 1831

jamb 1991

Factory P produces 20,000 bags of cement per day while factory Q produces 15,000 bags per day. If P reduces production by 5% and Q increases production by 5%, determine the effective loss in the number of bags produced per day by the two factories

A250

B750

C1000

D1250

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Question 1832

jamb 1991

express 62 \(\div\) 3 as a decimal correct to 3 significant figures

A20.6

B20.667

C20.67

D20.7

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Question 1833

jamb 1991

Find correct to 3 decimal places (\(\frac{1}{0.05} \div\frac{1}{5.005}\)) - (0.05 x 2.05)

A99.998

B98.999

C89.899

D9.998

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Question 1834

jamb 1991

If 2257 is the result of subtracting 4577 from 7056 in base n, find n

C10

D11

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Question 1835

jamb 1991

Simplify 3\(\frac{1}{3}\) - 1\(\frac{1}{4}\) x \(\frac{2}{3}\) + 1\(\frac{2}{5}\)

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Question 1836

waec 1990

The annual salary of Mr. Johnson Mohammed for 1989 was N12,000.00. He spent this on agriculture projects, education of his children, food items, saving , maintenance and miscellaneous items as shown in the pie chart

How much did he spend on food items?

AN9,700.00

BN6,700.00

CN2,000.00

DN4,000.00

EN2,300.00

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Question 1837

waec 1990

Two groups of male students cast their vote on a particular proposal. The results are as follows:

	In favor	Against
Group A	128	32
Group B	96	48

If a student is chosen at random, what is probability that he is against the proposal?

A3/19

B4/19

C5/19

D9/19

E10/19

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Question 1838

waec 1990

Two groups of male students cast their votes on a particular proposal. The result are as follows:

	In favor	Against
Group A	128	32
Group B	96	48

If a student in favor of the proposal is selected for a post, what is the probability that he is from group A?

A8/19

B16/35

C10/19

D4/7

E4/5

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Question 1839

waec 1990

The table shows that the amount of money (in naira)collected through voluntary donations in a secondary school.

What is the median of distribution

AN3.00

BN9.00

CN12.00

DN15.00

EN18.00

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Question 1840

waec 1990

The table shows that the amount of money (in naira)collected through voluntary donations in a secondary school. What is the mode?

AN3

BN6

CN9

DN12

EN15

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