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Calculate geometric probability (#855)
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Calculate geometric probability (#855)
Use
P
(
X
=
r
)
=
(
1
−
p
)
r
−
1
p
P(X=r) = (1-p)^{r-1}p
P
(
X
=
r
)
=
(
1
−
p
)
r
−
1
p
for
r
=
1
,
2
,
3
,
…
r=1,2,3,\dots
r
=
1
,
2
,
3
,
…
.