Jamb Mathematics Past Questions and Answers

Question 2231:

• JAMB 2014

\(\begin{array}{c|c}
Values & 0 & 1 & 2 & 3 & 4 \\
\hline
Frequency & 1 & 2 & 2 & 1 & 9
\end{array}\)
Find the mode of the distribution above

A. 1
B. 2
C. 3
D. 4

Question 2232:

• JAMB 2014

Find the median of 5,9,1,10,3,8,9,2,4,5,5,5,7,3 and 6

A. 6
B. 5
C. 4
D. 3

Question 2233:

• JAMB 2014

Find the standard deviation of 5, 4, 3, 2, 1

A. \(\sqrt{2}\)
B. \(\sqrt{3}\)
C. \(\sqrt{6}\)
D. \(\sqrt{10}\)

Question 2234:

• JAMB 2014

In how many ways can a team of 3 girls be selected from 7 girls?

A. \(\frac{7!}{3!}\)
B. \(\frac{7!}{4!}\)
C. \(\frac{7!}{3!4!}\)
D. \(\frac{7!}{2!5!}\)

Question 2235:

• JAMB 2014

\(\begin{array}{c|c}
Numbers & 1 & 2 & 3 & 4 & 5 & 6 \\
\hline
Frequency & 18 & 22 & 20 & 16 & 10 & 14
\end{array}\)
The table above represents the outcome of throwing a die 100 times. What is the probability of obtaining at least a 4?

A. \(\frac{1}{5}\)
B. \(\frac{1}{2}\)
C. \(\frac{2}{5}\)
D. \(\frac{3}{4}\)