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HCU MCA 2013 Paper
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© examsnet.com
Question : 59
Total: 75
When 4 dice are thrown, what is the probability that the same number appears on each of them?
1
/
1296
1
216
1
36
24
216
Validate
Solution:
(b) Total Sample space, n(s) = 6 x 6 x 6 x 6 =
6
4
Now, favourable cases = {(1,1,1,1), (2,2,2,2)(3,3,3,3), (4,4,4,4), (5,5,5,5), (6,6,6,6)}
Total number of favourable cases, n(E) = 6
∴ Required probability
=
n
(
E
)
n
(
S
)
=
6
6
4
=
1
6
3
=
1
256
© examsnet.com
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