ALGEBRA - Jamb Mathematics Past Questions and Answers

Question 51:

• JAMB 2017

If α and β are the roots of the equation 3x² + bx − 2 = 0. Find the value of \(\frac{1}{\alpha}\) + \(\frac{1}{\beta}\)

A. \(\frac{-5}{3}\)
B. \(\frac{-2}{3}\)
C. \(\frac{1}{2}\)
D. \(\frac{5}{2}\)

Question 52:

• JAMB 2016

If the 2nd term of a G.P is \(\frac{8}{9}\) and the 6th term is 4\(\frac{1}{2}\). Find the common ratio.

A. 2
B. \(\frac{3}{2}\)
C. \(\frac{2}{3}\)
D. 3

Question 53:

• JAMB 2016

The nth term of the sequence 3, 9, 27, 81.....is

A. 3 x 3^n-2
B. 3 x 3^n-1
C. 3 x 3ⁿ⁺²
D. 3 x 3ⁿ⁺¹

Question 54:

• JAMB 2016

If N = \(\frac{p}{2}\)(\(\frac{T_1 - T_2}{T_1}\)). Find P when N = 12, T₁ = 27 and T₂ = 24.

A. 48
B. 108
C. 54
D. 216

Question 55:

• JAMB 2016

Solve for x and y respectively
3x - 5y = 9
6x - 4y = 12

A. \(\frac{3}{4}\), 1
B. \(\frac{4}{3}\), 1
C. \(\frac{3}{4}\), -1
D. \(\frac{4}{3}\), -1