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Random Variables
medium
0:00.0
Let
X
∼
Exp
(
1
)
X \sim \text{Exp}(1)
X
∼
Exp
(
1
)
. What is
E
[
X
2
]
E[X^2]
E
[
X
2
]
?
A
1
B
2
C
0
D
4
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