A coin is tossed 3 times. List the possible outcomes. Find the probability of getting all heads.
1. 1/8
2. 1/6
3. 1/5
4. 2/9
1. 1/8
2. 1/6
3. 1/5
4. 2/9
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Correct Answer – Option 1 : 1/8
Given:
A coin is tossed 3 times.
Formula used:
P (getting all heads) = (Number of favorable outcomes)/(Total number if outcomes)
Calculation:
Total possible outcomes
⇒ (TTT), (TTH), (THT), (HTT), (THH), (HTH), (HHT), (HHH)
The total number of outcomes = 8.
Number of favorable outcomes = (HHH)
P (getting all heads) = (Number of favorable outcomes)/(Total number if outcomes)
⇒ P (getting all heads) = 1/8
∴ The probability of getting all heads are 1/8.