Three unbiased coins are tossed simultaneously. Find the probability of getting exactly 2 heads.


Answer:

38

Step by Step Explanation:
  1. When 3 coins are tossed simultaneously, all the possible outcomes are HHH,HHT,HTH,THH,HTT,THT,TTH, and TTT.

    So, total number of possible outcomes = 8.
  2. Let E be the event of getting exactly 2 heads.

    The favourable outcomes are HHT,HTH, and THH.

    Number of favouable outcomes = 3  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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