What is t the probability of getting exactly 2 heads when three coins tossed simultaneously?
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Consider all the possible ways to get two heads, HHT,HTHandTHHHHT,HTHandTHH. There are 2⋅2⋅2=82⋅2⋅2=8 possible combinations in total. Therefore, the answer is 3/8
aniket199:
can you explain this
3 coin .. what we get 1. HHH. 2. HHT 3. HTH 4. THH 5. HTT 6. THT 7. TTH. 8. TTT WHERE T- tail and H- head. total ways 8. but 2 time head occurred only in 3 case HHT,HTH,THH ... probability = 3/8
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