Three unbiased coins are tossed simultaneously. Find the probability of getting exactly 222 heads.
Answer:
3838
- When 33 coins are tossed simultaneously, all the possible outcomes are
HHH,HHT,HTH,THH,HTT,THT,TTH,HHH,HHT,HTH,THH,HTT,THT,TTH, and TTT.TTT.
So, total number of possible outcomes = 88. - Let EE be the event of getting exactly 22 heads.
The favourable outcomes are HHT,HTH,HHT,HTH, and THH.THH.
Number of favouable outcomes = 33 ∴ P( getting exactly 2 heads )=P(E)= Number of favourable outcomes Total number of outcomes =38. Thus, the probability of getting exactly 2 heads = 38