A bag contains 8 balls, whose colours are either white or black. Four balls are drawn at random without replacement and it is found that 2 balls are white and the other 2 balls are black. The probability that the bag contains an equal number of white and black balls is:

1

If $A=\begin{bmatrix}\sqrt2&1\\-1&\sqrt2\end{bmatrix}$, $B=\begin{bmatrix}1&0\\1&1\end{bmatrix}$, $C=ABA^{\mathrm T}$ a…

Topic: JEE Main 2024 (1 February Morning Shift)

2

If $\tan A=\dfrac{1}{\sqrt{x^{2}+x+1}},\quad \tan B=\dfrac{\sqrt{x}}{\sqrt{x^{2}+x+1}}$ and $\tan C=\big(x^{-3}+x^{-2}+…

Topic: JEE Main 2024 (1 February Morning Shift)

3

The value of the integral $\int\limits_0^{\pi / 4} \frac{x \mathrm{~d} x}{\sin ^4(2 x)+\cos ^4(2 x)}$

Topic: JEE Main 2024 (1 February Morning Shift)

4

If $n$ is the number of ways five different employees can sit into four indistinguishable offices where any office may …

Topic: JEE Main 2024 (1 February Morning Shift)

5

Let $S=\left\{\,z\in\mathbb{C}:\ |z-1|=1 \ \text{and}\ \left|(\sqrt2-1)(z+\bar z)-i(z-\bar z)\right|=2\sqrt2\,\right\}$…

Topic: JEE Main 2024 (1 February Morning Shift)

6

Let the median and the mean deviation about the median of 7 observations $170,125,230,190,210,a,b$ be $170$ and $\dfrac…

Topic: JEE Main 2024 (1 February Morning Shift)

7

Let $\vec a=-5\hat i+\hat j-3\hat k$, $\vec b=\hat i+2\hat j-4\hat k$ and $\vec c=\big(((\vec a\times\vec b)\times\hat …

Topic: JEE Main 2024 (1 February Morning Shift)

8

Let $S=\Big\{x\in\mathbb{R}:(\sqrt3+\sqrt2)^{x}+(\sqrt3-\sqrt2)^{x}=10\Big\}$. Then the number of elements in $S$ is:

Topic: JEE Main 2024 (1 February Morning Shift)

9

The area enclosed by the curves $xy+4y=16$ and $x+y=6$ is equal to:

Topic: JEE Main 2024 (1 February Morning Shift)

10

Let $f:\mathbf{R}\rightarrow\mathbf{R}$ and $g:\mathbf{R}\rightarrow\mathbf{R}$ be defined as $ f(x)= \begin{cases} …

Topic: JEE Main 2024 (1 February Morning Shift)