College of Admission Tests Multan

Number System

Solve the question of and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 2

Sum of a rational number and its reciprocal is 13/6. Find the number
  • 2
  • 3/2
  • 4/2
  • 5/2

  Show/Hide Explanation 

Correct Answer: B

x + 1 x = 13 6
x2+1 x = 13 6
6x2 − 13x + 6 = 0
6x2 − 9x − 4x + 6=0
(3x − 2)(2x − 3)
x = 2 3 or 3 2