1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If 6 letter words, with or without meaning can be formed out of these letters of the word "MATHEMATICS", repetition of letters is not allowed is $960 P$. Then, ' $P$ ' equals

A
18
B
20
C
21
D
23
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the coefficient of $x^2$ and $x^3$ in the expansion of $\left(1+8 x+b x^2\right)(1-3 x)^9$ in the power of $x$ are equal, then $b$ is

A
$\frac{54}{7}$
B
$\frac{27}{7}$
C
$\frac{108}{7}$
D
1
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the unit vectors $\mathbf{a}$ and $\mathbf{b}$ are inclined at $2 \theta$ and $|\mathbf{a}-\mathbf{b}|<1$, then if $0<\theta<\pi, \theta$ lies in the interval.

A
$\left(\frac{5 \pi}{6}, \pi\right]$
B
$\left[0, \frac{\pi}{6}\right]$
C
$\left[\frac{\pi}{6}, \frac{\pi}{2}\right]$
D
$\left(\frac{\pi}{2}, \frac{5 \pi}{6}\right]$
4
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the coefficients of $x^7$ and $x^8$ in the expansion of $\left[2+\frac{x}{3}\right]^n$ are equal, then value of $n$ is

A
15
B
45
C
55
D
56
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