Quantitative Ability Questions
December 18th, 2009 Posted in Quantitative Ability
Quantitative Ability Questions.
1. ‘C’ is a natural number and both x2 + 4x + C = 0 and x2 + 4x – C = 0 have rational roots. The number of possible values for C are:
a. 1
b. 2
c. 3
d. None of these
2. If log2(x2 + 3x) = log2 (X + 3) + 2, then X =?
a. 2
b. 4
c. -3 and 2
d. 4 and -3
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December 23rd, 2009 at 11:13 pm
1.d
we get values od C as [-4,4]
So all together we four natural numbers 4,3,2,1
2.b
by solving we get x = 4 & -3 But at -3 the equation is NOT defined.
So the solution is 4 only.