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UPSC NDA 2 2012 Mathematics Paper
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© examsnet.com
Question : 116
Total: 120
What is the most probably number of successes in 10 trials with probability of success
2
∕
3
?
10
7
5
4
Validate
Solution:
p
(
r
)
=
n
C
r
⋅
p
r
⋅
q
n
−
r
n
=
10
,
p
=
2
∕
3
,
q
=
1
∕
3
© examsnet.com
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