ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 121:

• JAMB 1980

List all integer values of x satisfying the inequality -1 < 2x - 5 \(\leq\) 5

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

Question 122:

• JAMB 1980

Find the roots of the equation 10x² - 13x - 3 = 0

A. X = \(\frac{3}{5}\) or -\(\frac{1}{2}\)
B. X = \(\frac{3}{10}\) or -1
C. X = \(\frac{3}{10}\) or 1
D. X = \(\frac{1}{5}\) or \(\frac{-3}{2}\)
E. X = -\(\frac{1}{5}\) or \(\frac{3}{2}\)

Question 123:

• JAMB 1980

Make c the subject of formula v = 1 - \(\frac{a}{5}\)(b + \(\frac{3c}{7}\))

A. [\(\frac{7}{3}\) + \(\frac{5}{a}\)(v - 1)] + b
B. [\(\frac{7b}{3}\) + \(\frac{5}{a}\)(v - 1)]
C. \(\frac{7}{3}\)[b + \(\frac{5}{a}\)(v - 1)]
D. \(\frac{7}{3}\)[b + \(\frac{5v - 1}{a}\)]

Question 124:

• JAMB 1980

What factor is common to all the expressions x² - x, 2x² + x - 1 and x² - 1?

A. X
B. X + 1
C. X - 1
D. No common factor
E. (2x - 1)

Question 125:

• JAMB 1980

Which of the formula below represents the general terms of the following set of numbers(-1, \(\frac{2}{3}\), -\(\frac{1}{2}\), \(\frac{2}{5}\)......) for n = 1, 2, 3, 4.......?

A. \(\frac{2}{n + 1}\)
B. (-1)^{n + 1} \(\frac{2}{n + 1}\)
C. (-1)ⁿ \(\frac{2}{n + 1}\)
D. \(\frac{n}{2n - 1}\)
E. (-1)ⁿ\(\frac{n}{2n - 1}\)