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3221

Bello chooses a number randomly from 1 to 10. What is the probability that it is either odd or prime?

  • A. \(\frac{1}{10}\)
  • B. \(\frac{2}{5}\)
  • C. \(\frac{1}{2}\)
  • D. \(\frac{3}{5}\)
  • E. \(\frac{9}{10}\)
View Answer & Discuss (17) NECO 2008
3222
If tan α = \(\frac{1}{2}\) and tan β = \(\frac{1}{3}\) and both α and β are acute, find tan (α + β).
  • A. 0.015
  • B. 1
  • C. 10
  • D. 39.81
  • E. 45
View Answer & Discuss (1) NECO 2008
3223
Multiply (3\(\sqrt{a}\) - 4a) by (4a + 3\(\sqrt{a}\))
  • A. 9a + 16a2
  • B. 9a – 16a2
  • C. 3a + 16a2
  • D. 3a - 16a2
  • E. a - 16a2
View Answer & Discuss NECO 2008
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3224
The median of a distribution can be estimated from
  • A. Barchart
  • B. Cumulative frequency curve
  • C. Frequency polygon
  • D. Pictorial
  • E. Pie chart
View Answer & Discuss (1) NECO 2008
3225
If A = \(\frac{1}{2}\)h (a + b), make ‘a’ the subject of the formula
  • A. (2A – 2bh) ÷ b
  • B. (2A – bh) ÷ h
  • C. (2A – bh) ÷ b
  • D. (A – 2bh) ÷ h
  • E. (2A – h) ÷ bh
View Answer & Discuss (2) NECO 2008
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