Four coins are tossed. What is the probability of at least one tail?

Question

asked Nov 28, 2022 11.3k views

2 Answers

Abhinav Mathur · Answer 1 · 2022-12-03T16:02:00+0000

Answer:

93.75%

This type of problem you have to REVERSE the question...

"at least one tail" is all possibilities EXCEPT "all heads"...

so your answer is 100% - P(4 heads)

P(4 heads) = (1/2)^4 = .0625

1 - .0625 = .9375

Explanation: