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Mathematics JAMB Past Questions

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841

\(\begin{array}{c|c} x & 1 & 2 & 3 & 4 & 5 \\ \hline f & y + 2 & y - 1 & 2y - 3 & y + 4 & 3y - 4\end{array}\)
This table shows the frequency distribution of a data if the mean is \(\frac{43}{14}\), find y

  • A. 1
  • B. 2
  • C. 3
  • D. 4
View Answer & Discuss (3) JAMB 1994
842
Find the mean deviation of the set of numbers 4, 5, 9
  • A. zero
  • B. 2
  • C. 5
  • D. 6
View Answer & Discuss (1) JAMB 1994
843
Class interval 1 - 5 6 - 10 11 - 15 16 - 20 21 - 25
Frequency 6 15 20 7 2

Estimate the median of the frequency distribution above

  • A. 10\(\frac{1}{2}\)
  • B. 11\(\frac{1}{2}\)
  • C. 12
  • D. 13
View Answer & Discuss (7) JAMB 1994
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844
\(\begin{array}{c|c} x & 1 & 2 & 3 & 4 & 5 \\ \hline f & 2 & 1 & 2 & 1 & 2\end{array}\)
Find the variance of the frequency distribution above
  • A. \(\frac{3}{2}\)
  • B. \(\frac{9}{4}\)
  • C. \(\frac{5}{2}\)
  • D. 3
View Answer & Discuss (3) JAMB 1994
845
In a survey, it was observed that 20 students read newspapers and 35 read novels. If 40 of the students read either newspapers or novels, what is the probability of the students who read both newspapers and novels?
  • A. \(\frac{1}{2}\)
  • B. \(\frac{2}{3}\)
  • C. \(\frac{3}{8}\)
  • D. \(\frac{3}{11}\)
View Answer & Discuss (5) JAMB 1994
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts