Question

two coins are tossed simultaneously find the probability of getting two tails ​

Answer 1

Two coins are tossed simultaneously. Find the probability of getting

i) exactly one head

ii) at least one tail

iii) no tail

iv) at most one head

When two coins are tossed the results are (HH,HT,TH,TT)

Total no. of outcomes =4

1) Exactly one head = only two cases are (HT,TH)

=

4

2

=

2

1

2) At least one tail = There are three cases (HT,TH,TT)

=

4

3

3) No. tail = only one case (HH) =

4

1

4) Atmost one head =three cases (HT,TH,TT)

=

4

3

.