COMEDK 2023 Evening Shift | Probability Question 9 | Mathematics

$$ \text { If } P(B)=\frac{3}{5} \quad P(A / B)=\frac{1}{2} \text { and } P(A \cup B)=\frac{4}{5} \text { then } P(A \cup B)^{\prime}+P\left(A^{\prime} \cup B\right)= $$

$$ \frac{4}{5} $$

$$ \frac{1}{2} $$

$$ \frac{1}{5} $$

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

-0

The probability distribution of a discrete random variable X is given as

$$\mathrm{X}$$	1	2	4	2A	3A	5A
$$\mathrm{P(X)}$$	$$\frac{1}{2}$$	$$\frac{1}{5}$$	$$\frac{3}{25}$$	K	$$\frac{1}{25}$$	$$\frac{1}{25}$$

$$ \text { Then the value of } A \text { if } E(X)=2.94 \text { is } $$

$$ \frac{1}{2} $$

$$ \frac{1}{3} $$

COMEDK 2023 Evening Shift

MCQ (Single Correct Answer)

-0

18 Points are indicated on the perimeter of a triangle $$\mathrm{ABC}$$ as shown below. If three points are chosen then probability that it will from a triangle is

COMEDK 2023 Evening Shift Mathematics - Probability Question 1 English

$$ \frac{1}{2} $$

$$ \frac{355}{408} $$

$$ \frac{331}{816} $$

$$ \frac{711}{816} $$

COMEDK 2022

MCQ (Single Correct Answer)

-0

The probability of choosing randomly a number c from the set {1, 2, 3, ... 9} such that the quadratic equation $$x^2+4x+c=0$$ has real roots, is

$$\frac{1}{9}$$

$$\frac{2}{9}$$

$$\frac{3}{9}$$

$$\frac{4}{9}$$

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