Ebonyi State University Mathematics Post Utme Past Questions and Answers

Question 16 :

\begin{array}{|l|l|l|l|l|l|l|}
\hline Score & 0 & 1 & 2 & 3 & 4 & 5 \\
\hline No of Student & 2 & 8 & 14 & 16 & 12 & 8 \\
\hline
\end{array}
The distribution above shows the scores of sixty (60) students in a class test. What percentage of the students scored at least 3?

A. \(60 \%\)
B. \(36 \%\)
C. \(66 \%\)
D. \(40 \%\)

Question 17 :

The first derivative of \(y=(2+3 x)^{4}\) at \(x=-1\) is

A. 12
B. \(-12\)
C. 4
D. \(-4\)

Question 18 :

The minimum value of \(f(x)=x^{2}-4 x+5\) in the interval \([1,-1]\) is

A. \(-2\)
B. 10
C. 4
D. 5

Question 19 :

The table BELOW shows the marks scored by a group of students in a class test. If the mean score is \(3.4\), find \(x\).
\begin{array}{|l|l|l|l|l|l|}
\hline Score & 1 & 2 & 3 & 5 & 6 \\
\hline Frequency & 3 & 6 & 7 & \(x\) & 4 \\
\hline
\end{array}

A. 3
B. 4
C. 5
D. 2

Question 20 :

A company Is to select three different handset phones from five different types of Nokia brand and two different types of Samsung brand. In how many ways can the company choose the handsets, 50 as to include at least one Samsung brand?

A. 15
B. 25
C. 35
D. 45