True Discount - Quantitative Aptitude

Q1. If the roots of the equation x2+x+1 = 0 are α,β then the value of α33 is
(a) 2
(b) 3
(c) 5
(d) 6

Q2. If the roots of the equation x2+x+2 = 0 are α,β then the value of α42β24 is
(a) 0
(b) 2
(c) 3
(d) 5

Q3. If the roots of the equation x(x - 3) = 0 are α,β then α22 = ?
(a) 3
(b) 7
(c) 9
(d) 11

Q4. Find the value of K in the equation 2x2 - 5x + K = 0 if one root is double the other
(a) 13/9
(b) 17/9
(c) 23/9
(d) 25/9

Q5. Find the value of P if the equations (x+3)(x+7) = 0 and x2 + 9x + P = 0 has a common root.
(a) 8 or 12
(b) 12 or 14
(c) 12 or 16
(d) 14 or 18

Q6. Solve :- 4x-2 + 5x-1 + 1 = 0
(a) {-1, -3}
(b) {-1, -4}
(c) {-1, -5}
(d) {-1, -7}

Q7. Find the value of x in the equation 41+x + 41-x = 10
(a) ± ½
(b) ± ¼
(c) ± ¾
(d) ¼


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