Mathematics Past Questions

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1441

The mean of seven numbers is 10. If six of the numbers are 2, 4, 8, 14, 16 and 18, find the mode.

A. 6
B. 8
C. 14
D. 2

View Answer & Discuss (2) JAMB 2013

1442

Age	20	25	30	35	40	45
No of people	3	5	1	1	2	3

Calculate the median age of the frequency distribution in the table above

A. 25
B. 30
C. 35
D. 20

View Answer & Discuss (10) JAMB 2013

1443

If the variance of 3+x, 6, 4, x and 7-x is 4 and the mean is 5, find the standard deviation

A. \(\sqrt{3}\)
B. 2
C. 3
D. \(\sqrt{2}\)

View Answer & Discuss (4) JAMB 2013

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1444

\(\begin{array}{c|c} Score & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\ \hline Frequency & 1 & 0 & 7 & 5 & 2 & 3 & 1 & 1 \end{array}\)
The table above shows the scores of 20 students in further mathematics test. What is the range of the distribution?

A. 7
B. 6
C. 3
D. 10

View Answer & Discuss (3) JAMB 2013

1445

In how many ways can a student select 2 subjects from 5 subjects?

A. \(\frac{5!}{3!}\)
B. \(\frac{5!}{2!2!}\)
C. \(\frac{5!}{2!3!}\)
D. \(\frac{5!}{2!}\)

View Answer & Discuss (1) JAMB 2013

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