1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

The mean of five observations is 4 and their variance is 5.2. If three of these observations are 1, 2 and 6, then the other two are

A
2 and 9
B
3 and 8
C
4 and 7
D
5 and 6
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

In a sequence of 21 terms, the first 11 terms are in AP with common difference 2 and the last 11 terms are in GP with common ratio 2. If the middle term of AP be equal to the middle term of the GP, then the middle term of the entire sequence is

A
$$-\frac{10}{31}$$
B
$$\frac{10}{31}$$
C
$$\frac{32}{31}$$
D
$$-\frac{31}{32}$$
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

If p $$\ne$$ a, q $$\ne$$ b, r $$\ne$$ c and the system of equations

px + ay + az = 0

bx + qy + bz = 0

cx + cy + rz = 0

has a non-trivial solution, then the value of $$\frac{p}{p-a}+\frac{q}{q-b}+\frac{r}{r-c}$$ is

A
1
B
2
C
$$\frac{1}{2}$$
D
0
4
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

If g(x) = x2 + x $$-$$ 2 and $$\frac{1}{2}gof(x)=2x^2-5x+2$$, then f(x) is equal to

A
2x $$-$$ 3
B
2x + 3
C
2x2 + 3x + 1
D
2x2 $$-$$ 3x + 1
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