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Byju's Answer
Standard IX
Mathematics
Coin Tossing Experiment
If four coins...
Question
If four coins are tossed
,
find the chance that there should be two heads and two tails.
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Solution
Coin is tossed four times
So total number of outcomes
=
2
4
=
16
Number of ways of getting two heads
=
4
C
2
=
4
!
(
4
−
2
)
!
2
!
=
4
!
2
!
2
!
=
6
Now number of ways of getting two tails
=
2
C
2
=
1
∴
required probability
=
6
16
=
3
8
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