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Mathematics 2020 WAEC Past Questions

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6

An amount of N550,000.00 was realized when a principal, x was saved at 2% simple interest for 5 years. Find the value of x

  • A. N470,000.00
  • B. N480,000.00
  • C. N490,000.00
  • D. N500,000.00
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7

Given that \(\frac{\sqrt{3} + \sqrt{5}}{\sqrt{5}}\) 

= x + y\(\sqrt{15}\), find the value of (x + y) 

  • A. 1\(\frac{3}{5}\)
  • B. 1\(\frac{2}{5}\)
  • C. 1\(\frac{1}{5}\)
  • D. \(\frac{1}{5}\)
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8

If x = 3 and y = -1, evaluate 2(x\(^2\) - y\(^2\))

  • A. 24
  • B. 22
  • C. 20
  • D. 16
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9

Solve 3x - 2y = 10 and x + 3y = 7 simultaneously

  • A. x = -4 and y = 1
  • B. x = -1 and y = -4
  • C. x = 1 and y = 4
  • D. x = 4 and y = 1
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10

The implication x \(\to\) y is equivalent to?

  • A. ~ y \(\to\) ~ x
  • B. y \(\to\) ~ x
  • C. ~ x \(\to\) ~ y
  • D. y \(\to\) x
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