The number of all possible positive integral values of $\alpha$ for which the roots of the quadratic equation $6x^{2}-11x+\alpha=0$ are rational numbers is:

1

An urn contains $5$ red and $2$ green balls. A ball is drawn at random from the urn. If the drawn ball is green, then a…

Topic: JEE Main 2019 (9 January Evening Shift)

2

Let $\vec a=\hat i+\hat j+\sqrt{2}\,\hat k$, $\vec b=b_1\hat i+b_2\hat j+\sqrt{2}\,\hat k$, $\vec c=5\hat i+\hat j+\sqr…

Topic: JEE Main 2019 (9 January Evening Shift)

3

For each $x\in\mathbb{R}$, let $[x]$ be the greatest integer less than or equal to $x$. Then $\displaystyle \lim_{x\t…

Topic: JEE Main 2019 (9 January Evening Shift)

4

If $x=\sin^{-1}(\sin 10)$ and $y=\cos^{-1}(\cos 10)$, then $y-x$ is equal to:

Topic: JEE Main 2019 (9 January Evening Shift)

5

If the system of linear equations$x-4y+7z=g$,$3y-5z=h$,$-2x+5y-9z=k$is consistent, then:

Topic: JEE Main 2019 (9 January Evening Shift)

6

Let $z_{0}$ be a root of the quadratic equation $x^{2}+x+1=0$. If $z=3+6i\,z_{0}^{81}-3i\,z_{0}^{93}$, then $\arg z$ is…

Topic: JEE Main 2019 (9 January Evening Shift)

7

If both the roots of the quadratic equation $x^{2}-mx+4=0$ are real and distinct and they lie in the interval $[1,5]$, …

Topic: JEE Main 2019 (9 January Evening Shift)

8

Let $S$ be the set of all triangles in the $xy$-plane, each having one vertex at the origin and the other two vertices …

Topic: JEE Main 2019 (9 January Evening Shift)

9

Let the equations of two sides of a triangle be $3x - 2y + 6 = 0$ and $4x + 5y - 20 = 0$. If the orthocentre of this …

Topic: JEE Main 2019 (9 January Evening Shift)

10

A data consists of $n$ observations: $x_1,x_2,\ldots,x_n$. If $\displaystyle \sum_{i=1}^{n}(x_i+1)^2=9n$ and $\displays…

Topic: JEE Main 2019 (9 January Evening Shift)

1

Let $A=\{x\in\mathbb{R}:\ x\ \text{is not a positive integer}\}$. Define a function $f:A\to\mathbb{R}$ as $f(x)=\dfrac{…

Topic: JEE Main 2019 (9 January Evening Shift)

2

The area of the region $A=\{(x,y): 0\le y\le x|x|+1 \text{ and } -1\le x\le 1\}$ (in sq. units) is:

Topic: JEE Main 2019 (9 January Evening Shift)

3

Let $f:[0,1]\to\mathbb{R}$ be such that $f(xy)=f(x)\,f(y)$ for all $x,y\in[0,1]$, and $f(0)\ne 0$. If $y=v(x)$ satisf…

Topic: JEE Main 2019 (9 January Evening Shift)