Question

Getting at most two heads on three coins are tossed

Answer 1

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Answer 2

Possible out Comes are :-

( HHH )

( HHT )

( HTH )

( HTH )

( THT )

( THH )

( TTT )

( TTH )

Total outcomes are :- 8

At most 2 head that means the term must contain 2 or less than 2

That is 2 , 1 and 0 heads


So ,

Possible 2 heads are :- 4

Possible 1 heads are :- 2

Possible 0 heads are :- 1

So ,

Outcomes are :- 7

P ( atmost 2 head ) = 7 / 8