Two fair coins are tossed simultaneously. Find the probability ofGetti...
When two coins are tossed the results can be like this (let us give numbers for them)
1) Both are heads i.e. HH
2) First head, then tail i.e. HT
3) First tail, then head i.e. TH
4) Both are tails i.e. TT
The total number of outcome is 4.
Find the probability of getting
1) exactly one head: - Only cases 2 and 3 from the above chances qualify for this criteria. So probablity is 2/4 = 1/2
2) At least one tail: - Only cases 2, 3 and 4 from the above chances qualify for this criteria. So probablity is 3/4
3) No tail: - Only case 1 from the above chances qualify for this criteria. So probablity is 1/4
4) At most one head: - This means either no head or only one head. So cases 2,3 and 4 from the above chances qualify for this criteria. So probablity is 3/4