Post Utme Mathematics Past Questions and Answers

Question 401:

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

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

Question 402:

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 403:

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 404:

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

Question 405:

Simplify \(2^{5} / 12-1^{7} / 8 \times 6 / 5\)

A. \(1 / 6\)
B. \({ }^{13 / 20}\)
C. \({ }^{11 / 20}\)
D. \(9 / 4\)
E. \({ }^{3 / 5}\)