NTA JEE Main 19th April 2014 Online

Instructions

For the following questions answer them individually

NTA JEE Main 19th April 2014 Online - Question 61


The equation $$\sqrt{3x^2 + x + 5} = x - 3$$, where x is real, has:

NTA JEE Main 19th April 2014 Online - Question 62


For all complex numbers z of the form $$1 + i\alpha$$, $$\alpha \in R$$, if $$z^2 = x + iy$$, then:

NTA JEE Main 19th April 2014 Online - Question 63


Two women and some men participated in a chess tournament in which every participant played two games with each of the other participants. If the number of games that the men played between themselves exceeds the number of games that the men played with the women by 66, then the number of men who participated in the tournament lies in the interval:

NTA JEE Main 19th April 2014 Online - Question 64


Let $$f(n) = \left[\frac{1}{3} + \frac{3n}{100}\right]n$$, where $$[n]$$ denotes the greatest integer less than or equal to n. Then $$\sum_{n=1}^{56} f(n)$$ is equal to:

NTA JEE Main 19th April 2014 Online - Question 65


The number of terms in an A.P. is even, the sum of the odd terms in it is 24 and that of the even terms is 30. If the last term exceeds the first term by $$10\frac{1}{2}$$, then the number of terms in the A.P. is:

NTA JEE Main 19th April 2014 Online - Question 66


The coefficient of $$x^{1012}$$ in the expansion of $$(1 + x^n + x^{253})^{10}$$, (where $$n \leq 22$$ is any positive integer), is:

NTA JEE Main 19th April 2014 Online - Question 67


If a line L is perpendicular to the line $$5x - y = 1$$, and the area of the triangle formed by the line L and the coordinate axes is 5 sq units, then the distance of the line L from the line $$x + 5y = 0$$ is:

NTA JEE Main 19th April 2014 Online - Question 68


The circumcentre of a triangle lies at the origin and its centroid is the midpoint of the line segment joining the points $$(a^2 + 1, a^2 + 1)$$ and $$(2a, -2a)$$, $$a \neq 0$$. Then for any a, the orthocentre of this triangle lies on the line:

NTA JEE Main 19th April 2014 Online - Question 69


The equation of the circle described on the chord $$3x + y + 5 = 0$$ of the circle $$x^2 + y^2 = 16$$ as the diameter is:

NTA JEE Main 19th April 2014 Online - Question 70


A chord is drawn through the focus of the parabola $$y^2 = 6x$$ such that its distance from the vertex of this parabola is $$\frac{\sqrt{5}}{2}$$, then its slope can be:

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