MCQ
Variance of the distribution 73, 77, 81, 85, ...,113 is:
- A10
- B160
- C161
- D161
✓
Answer
- 161
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In a town of 840 persons, 450 persons read Hindi, 300 read English and 200 read both. Then the number of persons who read neither is,
In a town of 840 persons, 450 persons read Hindi, 300 read English and 200 read both. Then the number of persons who read neither is,
The value of $\tan\text{x}\tan\Big(\frac{\pi}{3}-\text{x}\Big)\tan\Big(\frac{\pi}{3}+\text{x}\Big)$ is:
→If the cube roots of unity are $1,\omega$ and $\omega^2$, then the roots of the equation $(\text{x} -1)3+8=0,$ are:
→$\text{x} + 2\text{y}\leq8$
$\text{x}\leq0,\text{y}\leq0$
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$\text{x}\leq0,\text{y}\leq0$
$ 2\text{x} + \text{y}\leq8$
$4\text{x}+5\text{y}\geq40$
The image of point $(0,0,-4)$ in $x y$ plane is :
→limx→0 x sin $ \frac{1}{\text{x}}$ is equal to:
→$\sin163^\circ\cos347^\circ+\sin73^\circ\sin167^\circ=$
→- $0$
- $\frac{1}{2}$
- $1$$$
- None of these
The coefficient of x4 in $\Big(\frac{\text{x}}{2}-\frac{3}{\text{x}^{2}}\Big)$ is:
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$\frac{405}{256}$
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$\frac{504}{259}$
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$\frac{450}{263}$
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None of these.
If n = 1,2,3, ..., then $\cos\alpha\cos4\alpha\ ...\cos2^{\text{n}-1}\alpha$ is equal to:
→- $\frac{\sin2\text{n}\alpha}{2\text{n}\sin\alpha}$
- $\frac{\sin2^\text{n}\alpha}{2^\text{n}\sin2^{\text{n}-1}\alpha}$
- $\frac{\sin4^{\text{n}-1}\alpha}{4^{\text{n}-1}\sin\alpha}$
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For all $\text{n}\in\text{N},$ 3 × 52n+1 + 23n+1 is divisible by:
→- 19
- 17
- 23
- 25