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Mathematics JAMB Past Questions

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716
find the equation of the curve which passes through by 6x - 5
  • A. 6x2 - 5x + 5
  • B. 6x2 + 5x + 5
  • C. 3x2 - 5x - 5
  • D. 3x2 - 5x + 3
View Answer & Discuss (3) JAMB 1998
717
If m and n are the mean and median respectively of the set of numbers 2, 3, 9, 7, 6, 7, 8, 5, find m + 2n to the nearest whole number
  • A. 19
  • B. 18
  • C. 13
  • D. 12
View Answer & Discuss (2) JAMB 1998
718

\(\begin{array}{c|c} \text{Average hourly earnings(N)} & 5 - 9 & 10 - 14 & 15 - 19 & 20 - 24\\ \hline \text{No. of workers} & 17 & 32 & 25 & 24\end{array}\)

Estimate the mode of the above frequency distribution

  • A. 12.2
  • B. 12.27
  • C. 12.9
  • D. 13.4
View Answer & Discuss (7) JAMB 1998
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719
Find the variance of the numbers k, k+1, k+2,
  • A. \(\frac{2}{3}\)
  • B. 1
  • C. k + 1
  • D. (k + 1)2
View Answer & Discuss JAMB 1998
720

Find the positive value of x if the standard deviation of the numbers 1, x + 1, 2x + 1 is \(\sqrt6\)

  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (8) JAMB 1998
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