Probability Tosses Until Six (Jee Mains) | ExamDuo
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Random Variables and Distributions
Medium
Probability Tosses Until Six
A fair die is tossed repeatedly until a six is obtained. Let
X
denote the number of tosses required and let
a
=
P
(
X
=
3
)
,
b
=
P
(
X
≥
3
)
and
c
=
P
(
X
≥
6
∣
X
>
3
)
. Then
b
+
c
a
is equal to___
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