1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

In how many ways 4 balls can be picked from 6 black and 4 green coloured balls such that at least one black ball is selected?

A
212
B
210
C
209
D
15
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

In how many ways can 9 examination papers be arranged so, that the best and the worst papers are never together?

A
9! $$-$$ 2! $$\times$$ 7!
B
9! $$-$$ 2! $$\times$$ 8!
C
9! $$-$$ 8!
D
9! $$-$$ 7!
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is partial fraction of $$\frac{-x^2+6 x+13}{(3 x+5)\left(x^2+4 x+4\right)}$$ is equal to

A
$$\frac{3}{3 x+5}+\frac{-1}{x+2}+\frac{2}{(x+2)^2}$$
B
$$\frac{2}{3 x+5}+\frac{-1}{x+2}+\frac{3}{(x+2)^2}$$
C
$$\frac{-1}{3 x+5}+\frac{2}{x+2}+\frac{3}{(x+2)^2}$$
D
$$\frac{3}{3 x+5}+\frac{2}{x+2}+\frac{-1}{(x+2)^2}$$
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a $$\triangle A B C$$, if $$3 \sin A+4 \cos B=6$$ and $$4 \sin B+3 \cos A=1$$, then $$\sin (A+B)$$ is equal to

A
$$1$$
B
$$\frac{1}{2}$$
C
$$0$$
D
$$\cos C$$
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