Three unbiased coins are tossed simultaneously. Find the probability of getting exactly 222 heads.


Answer:

3838

Step by Step Explanation:
  1. 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.
  2. 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

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