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

The number of words (with or without meaning) that can be formed from all the letters of the word "LETTER" in which vowels never come together is

A
80
B
100
C
120
D
140
2
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

If $$a_1, a_2, \ldots, a_n$$ are in HP, then the expression $$a_1 a_2+a_2 a_3+\ldots+a_{n-1} a_n$$ is equal to

A
$$n\left(a_1-a_n\right)$$
B
$$(n-1)\left(a_1-a_n\right)$$
C
$$n a_1 a_n$$
D
$$(n-1) a_1 a_n$$
3
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

The equation of the line passing through $$(-4,3,1)$$ parallel to the plane $$x+2 y-z-5=0$$ and intersecting the line $$\frac{x+1}{-3}=\frac{y-3}{2}=\frac{z-2}{-1}$$ is

A
$$\frac{x+4}{3}=\frac{y-3}{-1}=\frac{z-1}{1}$$
B
$$\frac{x+4}{-1}=\frac{y-3}{1}=\frac{z-1}{1}$$
C
$$\frac{x+4}{1}=\frac{y-3}{1}=\frac{z-1}{3}$$
D
$$\frac{x-4}{2}=\frac{y+3}{1}=\frac{z+1}{4}$$
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

Let $$\alpha, \beta$$ be the roots of the equation $$x^2-p x+r=0$$ and $$\frac{\alpha}{2}, 2 \beta$$ be the roots of the equation $$x^2-q x+r=0$$. Then, the value of $$r$$ is equal to

A
$$\frac{2}{9}(p-q)(2 q-p)$$
B
$$\frac{2}{9}(q-2 p)(2 q-p)$$
C
$$\frac{2}{9}(q-p)(2 p-q)$$
D
$$\frac{2}{9}(2 p-q)(2 q-p)$$
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