Jamb Mathematics Past Questions and Answers

Question 586:

• JAMB 1980

A man and his wife went to buy an article costing N400. The woman had 10% of the cost and the man 40% of the remainder. How much did they have altogether?

A. N216
B. N200
C. N184
D. N144
E. N100

Question 587:

• JAMB 1980

Simplify \(\frac{log_{10}8}{log_{10}4}\)

A. Log10²
B. Log10⁴
C. \(\frac{3}{2}\)
D. 2
E. None of the above

Question 588:

• 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 589:

• 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 590:

• 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\(\frac{n}{2n - 1}\)