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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

jamb 1983

If 0.0000152 x 0.00042 = A x 10\(^{B}\), where 1 \(\leq\) A < 10, find A and B

AA = 9, B = 6.38

BA = 6.38, B = -9

CA = -6.38, B = -9

DA = -9, B = -6.38

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Question 22

jamb 1983

Given that cos z = L , whrere z is an acute angle, find an expression for \(\frac{\cot z - \csc z}{\sec z + \tan z}\)

A\(\frac{1 - L}{1 + L}\)

B\(\frac{L^2 \sqrt{3}}{1 + L}\)

C\(\frac{1 + L^3}{L^2}\)

D\(\frac{L(L - 1)}{1 - L + 1 \sqrt{1 - L^2}}\)

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Question 23

jamb 1983

In a figure, PQR = 60o, PRS = 90o, RPS = 45o, QR = 8cm. Determine PS

A2\(\sqrt{3}\)cm

B4\(\sqrt{6}\)cm

C2\(\sqrt{6}\)cm

D8\(\sqrt{6}\)cm

E8cm

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Question 24

jamb 1983

Solve the following equations 4x - 3 = 3x + y = x - y = 3, 3x + y = 2y + 5x - 12

Ax = 5, y = 2

Bx = 2, y = 5

Cx = 5, y = -2

Dx = -2, y = -5

Ex = -5, y = -2

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Question 25

jamb 1983

If x is jointly proportional to the cube of y and the fourth power of z. In what ratio is x increased or decreased when y is halved and z is doubled?

A4:1 increase

B2:1 increase

C1:1 no change

D1:4 decrease

E3:4 decrease

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Question 26

jamb 1983

Given a regular hexagon, calculate each interior angle of the hexagon

A60^o

B30^o

C120^o

D45^o

E135^o

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Question 27

jamb 1983

A construction company is owned by two partners X and Y and it is agreed that their profit will be divided in the ratio 4:5. At the end of the year, Y received N5,000 more than X. What is the total profit of the company for the year?

AN20, 000

BN25,000

CN30,000

DN15,000

EN45, 000

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Question 28

jamb 1983

If M represents the median and D the mode of the measurements 5, 9, 3, 5, 7, 5, 8, then (M, D) is

A(6, 5)

B(5, 8)

C(5, 7)

D(5, 5)

E(7, 5)

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