JAMB Indices, Logarithms and Surds Mathematics Past Questions, Answers & Explanations - Mathematics

Jamb Mathematics Questions - Indices, Logarithms and Surds

Question 31:

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 32:

If it is given that 5^{x + 1} + 5^x = 150, then the value of x is equal to

Question 33:

Given log 2 = 0.69, log3 = 1, 10 and log7 = 1.90, all to a fixed base, find log 10.5 to the same base without using tables.

Question 34:

Given that 10x = 0.2 and log102 = 0.3010, find x

Question 35:

The difference between 4\(\frac{5}{7}\) and 2\(\frac{1}{4}\) greater by

A \(\frac{23}{28}\)
B \(\frac{24}{28}\)
C \(\frac{50}{56}\)
D \(\frac{27}{28}\)
E \(\frac{48}{56}\)