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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

Question 1 of 20 4,407 total questions

Question 1911

jamb 1989

Factorize 4a² - 12ab - C² + 9b²

A4a(a - 3b) + (3b - c)²

B(2a + 3b - c)(2a + 3b + c)

C(2a - 3b + c)(2a - 3b - c)

D4a(a - 3b) + (3b + c)

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Question 1912

jamb 1989

Factorize completely \(y^3 -4xy + xy^3 - 4y\)

A(y + xy)(y + 2)(y - 2)

B(y - xy)(y - 2)

Cy(1 + x)(y + 2)(y -2)

Dy(1 - x)(y + 2)(y - 2)

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Question 1913

jamb 1989

Simplify \(\frac{324 - 4x^2}{2x + 18}\)

A2(x - 9)

B2(9 + x)

C81 - x²

D-2(x - 9)

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Question 1914

jamb 1989

Solve for a positive number x such that \(2^{(x^3 - x^2 - 2x)} = 1\)

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Question 1915

jamb 1989

If \(f(x) = 2x^2 - 5x + 3\), find f(x + 1).

A2x² - x

B2x² - x + 10

C4x² + 3x + 2

D4x² + 3x + 12

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Question 1916

jamb 1989

The cost of dinner for a group of students is partly constant and partly varies directly as the number of students. If the cost is N74.00 when the number of students is 20 and N96.00 when the number of students is 30, find the cost when there are 15 students

AN68.50

BN63.00

CN60.00

DN52.00

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Question 1917

jamb 1989

Make R the subject of the formula S = \(\sqrt{\frac{2R + T}{2RT}}\)

AR = \(\frac{T}{(TS^2 + 1)}\)

BR = \(\frac{T}{2(TS^2 - 1)}\)

CR = \(\frac{T}{2(TS^2 + 1)}\)

DR = \(\frac{R}{2(TS^2 + 1)}\)

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Question 1918

jamb 1989

What are the values of y which satisfy the equation \(9^{y} - 4 \times 3^{y} + 3 = 0\) ?

A-1 and 0

B-1 and 1

C1 and 3

D0 and 1

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Question 1919

jamb 1989

Find p in terms of q if \(\log_{3} p + 3\log_{3} q = 3\)

A(\(\frac{3}{q}\))³

B(\(\frac{q}{3}\))^{\(\frac{1}{3}\)}

C(\(\frac{q}{3}\))³

D(\(\frac{3}{q}\))^{\(\frac{1}{3}\)}

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Question 1920

jamb 1989

Simplify \(4 - \frac{1}{2 - \sqrt{3}}\)

A2\(\sqrt{3}\)

B-2 - \(\sqrt{3}\)

C-2 + \(\sqrt{3}\)

D2 - \(\sqrt{3}\)

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Question 1921

jamb 1989

If the surface area of a sphere increased by 44%, find the percentage increase in diameter

A44

B30

C22

D20

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Question 1922

jamb 1989

Oke deposited N800.00 in the bank at the rate of 12\(\frac{1}{2}\)% simple interest. After some time the total amount was one and half times the principal. For how many years was the money left in the bank?

A2\(\frac{2}{3}\)

C5\(\frac{1}{3}\)

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Question 1923

jamb 1989

If a : b = 5 : 8, x : y = 25 : 16; evaluate \(\frac{a}{x}\) : \(\frac{b}{y}\)

A125 : 128

B3 : 5

C3 : 4

D2 : 5

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Question 1924

jamb 1989

What is the different between 0.007685 correct to three significant figures and 0.007685 correct to four places of decimal?

A10^-5

B7 x 10^-4

C8 x 10^-5

D10^-6

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Question 1925

jamb 1989

Simplify \(\sqrt[3]{(64r^{-6})^{\frac{1}{2}}}\)

A\(\frac{r}{2}\)

B2r

C\(\frac{1}{2r}\)

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

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Question 1926

jamb 1989

If \(12_{e} = X_{7}\), where e = 12, find X.

A20

B15

C14

D12

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Question 1927

jamb 1989

The prime factors of 2520 are

A2, 9, 5

B2, 9, 7

C2, 3, 5, 7

D2, 3, 7, 9

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Question 1928

jamb 1989

Evaluate 2700 000 x 0.03 ÷ 18 000

A4.5 x 10⁰

B4.5 x 10¹

C4.5 x 10²

D4.5 x 10³

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Question 1929

jamb 1989

Which of the following is in descending order?

A\(\frac{9}{10} \frac{4}{5} \frac{3}{4} \frac{17}{20}\)

B\(\frac{4}{5} \frac{9}{10} \frac{3}{4} \frac{17}{20}\)

C\(\frac{9}{10} \frac{17}{20} \frac{4}{5} \frac{3}{4}\)

D\(\frac{4}{5} \frac{9}{10} \frac{17}{20} \frac{3}{4}\)

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Question 1930

waec 1988

The surnames of 40 children in a class arranged in alphabetical order. 16 of the surnames begins with O and 9 of the surname begins with A, 14, of the letters of the alphabet do not appear as the first letter of a surname

If more than one surname begins with a letter besides A and O, how may surnames begin with that letter

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