Three different coins are tossed together. Find the probability of getting
1) exactly two heads
2) at least 2 heads
3) at least 2 tails
Total outcomes on tossing 3 coins {(HHH),(HHT),(HTT),(THT),(TTH)(HTH),(THH),(TTT)}
Total no. of solutions = n (T) = 8
1) outcomes with exactly two heads = {(HHT),(HTH),(THH)}
no. of outcomes n (E) = 3
Probability of getting exactly two heads = P1
P1 =
2) Outcomes with at least two heads = {(HHH), (HHT),(HTH), (THH)}
NO. of outcomes =
Probability of getting at least two heads =
3 ) outcomes with at least two tails = {(HTT), (THT),(TTH),(TTT)}
no. of outcomes =
Probability of getting at least two tails =