Multiple choice

What is the probability of getting at least one heads in four flips of a coin?

  1. 1/16

  2. 15/16

  3. 14/16

  4. 4/16

  5. 13/16
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 16 elements in the sample space. Then, the event of at least one head is the set of all elements but TTTT is not included.  Hence, there are 15 elements left in this set. Hence, the probability will be 15/16. So, it is the correct answer.

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