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Mathematics 1989 JAMB Past Questions

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6
What is the different between 0.007685 correct to three significant figures and 0.007685 correct to four places of decimal?
  • A. 10-5
  • B. 7 x 10-4
  • C. 8 x 10-5
  • D. 10-6
View Answer & Discuss JAMB 1989
7
If a : b = 5 : 8, x : y = 25 : 16; evaluate \(\frac{a}{x}\) : \(\frac{b}{y}\)
  • A. 125 : 128
  • B. 3 : 5
  • C. 3 : 4
  • D. 2 : 5
View Answer & Discuss (3) JAMB 1989
8

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?

  • A. 2\(\frac{2}{3}\)
  • B. 4
  • C. 5\(\frac{1}{3}\)
  • D. 8
View Answer & Discuss JAMB 1989
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9
If the surface area of a sphere increased by 44%, find the percentage increase in diameter
  • A. 44
  • B. 30
  • C. 22
  • D. 20
View Answer & Discuss JAMB 1989
10

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

  • A. 2\(\sqrt{3}\)
  • B. -2 - \(\sqrt{3}\)
  • C. -2 + \(\sqrt{3}\)
  • D. 2 - \(\sqrt{3}\)
View Answer & Discuss (2) JAMB 1989
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