1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

If the system of linear equation $$3 x-2 y+z=2, 4 x-3 y+3 z=-5$$ and $$7 x-5 y+\lambda z=9$$ has no solution, then $$\lambda$$ equals to

A
4
B
5
C
6
D
7
2
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

Let $$A=\left[\begin{array}{lll}3 & 2 & 3 \\ 4 & 1 & 0 \\ 2 & 5 & 1\end{array}\right]$$ and $$49 B=\left[\begin{array}{ccc}1 & 13 & -3 \\ -4 & -3 & 12 \\ \alpha & -11 & -5\end{array}\right]$$ If $$B$$ is the inverse of $$A$$, then the value of $$\alpha$$ is

A
0
B
18
C
20
D
5
3
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

If $$\cot ^{-1} \sqrt{\cos \alpha}-\tan ^{-1} \sqrt{\cos \alpha}=x$$, then $$\sin x$$ is equal to

A
$$\cot ^2\left(\frac{\alpha}{2}\right)$$
B
$$\tan ^2\left(\frac{\alpha}{2}\right)$$
C
$$\cot \left(\frac{\alpha}{2}\right)$$
D
$$\tan \alpha$$
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A cylindrical tank of radius $$10 \mathrm{~m}$$ is being filled with wheat at the rate of $$200 \pi$$ cubic metre per hour. Then, the depth of the wheat is increasing at the rate of

A
0.5 m/h
B
2 m/h
C
0.2 m/h
D
2.2 m/h
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