1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

$$\text { If } 10{ }^n C_2=3^{n+1} C_3 \text {, then the value of } n \text { is }$$

A
3
B
10
C
7
D
9
2
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

There are 10 points in a plane, out of these 6 are collinear. If $$N$$ is the total number of triangles formed by joining these points, then $$N=$$

A
120
B
850
C
100
D
150
3
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

In an examination, the maximum marks for each of three subjects is $$n$$ and that for the fourth subject is $$2 n$$. The number of ways in which candidates can get $$3 n$$ marks is

A
$$\frac{1}{6}(n+1)^2\left(5 n^2+10 n+6\right)^2$$
B
$$\frac{1}{6}(n+1)\left(5 n^2+10 n+6\right)^2$$
C
$$\frac{1}{6}(n+1)^2\left(5 n^2+10 n+6\right)$$
D
$$\frac{1}{6}(n+1)\left(5 n^2+10 n+6\right)$$
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

If a set $$A$$ has $$m$$-elements and the set $$B$$ has $$n$$-elements, then the number of injections from $$A$$ to $$B$$ is

A
$${ }^n C_m$$ if $$n \geq m$$
B
$${ }^n P_m$$ if $$n \geq m$$
C
0 if $$n \geq m$$
D
$$m \cdot{ }^n C_m$$ if $$n \geq m$$
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