Jamb Mathematics 1991 Past Questions and Answers

Question 21:

• JAMB 1991

Find the two values of y which satisfy the simultaneous equation 3x + y = 8, x\(^2\) + xy = 6.

A. -1 and 5
B. -5 and 1
C. 1 and 5
D. 1 and 1

Question 22:

• JAMB 1991

Find the range of values of x which satisfy the inequality \(\frac{x}{2}\) + \(\frac{x}{3}\) + \(\frac{x}{4}\) < 1

A. X < \(\frac{12}{13}\)
B. X < 13
C. X < 9
D. \(\frac{13}{12}\)

Question 23:

• JAMB 1991

Find the positive number n, such that thrice its square is equal to twelve times the number

A. 1
B. 2
C. 3
D. 4

Question 24:

• JAMB 1991

What is the nth term of the progression 27, 9, 3,......?

A. 27\(\frac{1}{3}\) ^{n - 1}
B. 3^{n + 2}
C. 27 + 18(n - 1)
D. 27 + 6(n - 1)

Question 25:

• JAMB 1991

Solve the equation (x - 2) (x - 3) = 12

A. 2, 3
B. 3, 6
C. -1, 6
D. 1, -6