Question 156:

• JAMB 2018

The table shown gives the marks scored by a group of student in a test.
Use the table to answer the question given.

Mark	0	1	2	3	4	5
Frequency	1	2	7	5	4	3

What is the probability of selecting a student from the group that scored 2 or 3

A. \(\frac{1}{11}\)
B. \(\frac{5}{22}\)
C. \(\frac{7}{22}\)
D. \(\frac{6}{11}\)

Question 157:

• JAMB 2017

What is the product of 2x² - x + 1 and 3 - 2x

A. 4x³ − 8x² + 5x + 3
B. −4x³ + 8x² − 5x + 3
C. −4x³ − 8x² + 5x + 3
D. 4x³ + 8x² − 5x + 3

Question 158:

• JAMB 2017

Evaluate 1 − (\(\frac{1}{5}\) x 1\(\frac{2}{3}\)) + (5 + 1\(\frac{2}{3}\))

A. 4
B. 3
C. \(\frac{22}{3}\)
D. 3 \(\frac{2}{3}\)

Question 159:

• JAMB 2017

Find the range of the following set of numbers 0.4, −0.4, 0.3, 0.47, −0.53, 0.2 and −0.2

A. 1.03
B. 0.07
C. 0.03
D. 1.0

Question 160:

• JAMB 2017

If and are the roots of the equation 3x² + bx 2 = 0. Find the value of \(\frac{1}{\alpha}\) + \(\frac{1}{\beta}\)

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