ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 341:

• JAMB 1995

The 4th term of an A.P. is 13 while the 10th term is 31. Find the 21st term.

A. 175
B. 85
C. 64
D. 45

Question 342:

• JAMB 1995

Express \(\frac{5x - 12}{(x - 2)(x - 3)}\) in partial fractions

A. \(\frac{2}{x + 2} - \frac{3}{x - 3}\)
B. \(\frac{2}{x - 2} + \frac{3}{x - 3}\)
C. \(\frac{2}{x - 3} - \frac{3}{x - 2}\)
D. \(\frac{5}{x - 3} - \frac{4}{x - 2}\)

Question 343:

• JAMB 1995

Which of the following binary operations is cumulative on the set of integers?

A. A \(\ast\) b = a + 2b
B. A \(\ast\) b = a + b - ab
C. A \(\ast\) b = a² + b
D. A \(\ast\) b = \(\frac{a(b + 1)}{2}\)

Question 344:

• JAMB 1995

If a \(\ast\) b = + \(\sqrt{ab}\), evaluate 2 \(\ast\)(12 \(\ast\) 27)

A. 12
B. 9
C. 6
D. 2

Question 345:

• JAMB 1995

Find the sum to infinity of the following sequence \(1, \frac{9}{10}, (\frac{9}{10})^{2}, (\frac{9}{10})^{3}\)

A. \(\frac{1}{10}\)
B. \(\frac{9}{10}\)
C. \(\frac{10}{9}\)
D. 10