Jamb Mathematics 1992 Past Questions and Answers

Question 16:

• JAMB 1992

Resolve \(\frac{3}{x^2 + x - 2}\) into partial fractions

A. \(\frac{1}{x - 1} - \frac{1}{x + 2}\)
B. \(\frac{1}{x + 1} + \frac{1}{x - 2}\)
C. \(\frac{1}{x + 1} - \frac{1}{x - 2}\)
D. \(\frac{1}{x - 2} + \frac{1}{x + 2}\)

Question 17:

• JAMB 1992

Find all values of x satisfying the inequality -11 \(\leq\) 4 - 3x \(\leq\) 28

A. -5 \(\leq\) x v 8
B. 5 \(\leq\) x \(\leq\) 8
C. -8 \(\leq\) x \(\leq\) 5
D. -5 < x \(\leq\) 8

Question 18:

• JAMB 1992

Find the sum to infinity to the following series 3 + 2 + \(\frac{4}{3}\) + \(\frac{8}{9}\) + \(\frac{16}{17}\) + .....

A. 1270
B. 190
C. 18
D. 9

Question 19:

• JAMB 1992

What is the n-th term of the sequence 2, 6, 12, 20...?

A. 4n - 2
B. 2(3^{n - 1})
C. N² + n
D. N² + 3n + 2

Question 20:

• JAMB 1992

For an arithmetical sequence, the first term is 2 and the common difference is 3. Find the sum of the first 11 terms

A. 157
B. 187
C. 197
D. 200