1
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A random variable X takes the values $0,1,2,3$ and its mean is 1.3 . If $\mathrm{P}(\mathrm{X}=3)=2 \mathrm{P}(\mathrm{X}=1)$ and $P(X=2)=0.3$, then $P(X=0)$ is

A
0.2
B
0.1
C
0.3
D
0.4
2
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Three persons $\mathrm{P}, \mathrm{Q}$ and R independently try to hit a target. If the probabilities of their hitting the target are $\frac{3}{4}, \frac{1}{2}$ and $\frac{5}{8}$ respectively, then the probability that the target is hit by P or Q but not by $R$, is

A
$\frac{15}{64}$
B
$\frac{21}{64}$
C
$\frac{39}{64}$
D
$\frac{9}{64}$
3
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one by one, with replacement, then the variance of the number of green balls drawn is

A
$6$
B
$4$
C
$\frac{6}{25}$
D
$\frac{12}{5}$
4
MHT CET 2024 15th May Evening Shift
MCQ (Single Correct Answer)
+2
-0
 

Suppose three coins are tossed simultaneously. If $X$ denotes the number of heads, then probability distribution of x is

A
$X=x$ 0 1 2 3
$P(X=x)$ $\frac{2}{8}$ $\frac{2}{8}$ $\frac{3}{8}$ $\frac{1}{8}$
B
$X=x$ 0 1 2 3
$P(X=x)$ $\frac{1}{8}$ $\frac{3}{8}$ $\frac{3}{8}$ $\frac{1}{8}$
C
$X=x$ 0 1 2
$P(X=x)$ $\frac{3}{8}$ $\frac{3}{8}$ $\frac{2}{8}$
D
$X=x$ 0 1 2 3
$P(X=x)$ $\frac{1}{8}$ $\frac{1}{8}$ $\frac{3}{8}$ $\frac{3}{8}$
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