1
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

If 6 is the mean of a Poisson distribution, then $$P(X \geq 3)=$$

A
$$1-25 / e^6$$
B
$$e^{-6}-25$$
C
$$24-25 e^6$$
D
$$e^{-3}$$
2
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

One card is selected at random from 27 cards numbered form 1 to 27. What is the probability that the number on the card is even or divisible by 5.

A
$$\frac{15}{27}$$
B
$$\frac{16}{27}$$
C
$$\frac{17}{27}$$
D
$$\frac{18}{27}$$
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Nine balls one drawn simultaneously from a bag containing 5 white and 7 black balls. The probability of drawing 3 white and 6 black balls is

A
$$\frac{{ }^7 C_3}{{ }^{12} C_9}$$
B
$$\frac{7}{22}$$
C
$$\frac{3}{22}$$
D
$$\frac{7}{11}$$
4
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

The probabilities that $$A$$ and $$B$$ speak truth are $$\frac{4}{5}$$ and $$\frac{3}{4}$$ respectively. The probability that they contradict each other when asked to speak on a fact is

A
$$\frac{1}{5}$$
B
$$\frac{3}{20}$$
C
$$\frac{4}{20}$$
D
$$\frac{7}{20}$$
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