Multiple choice general knowledge math & puzzles what's the probability of getting atleast 3 heads out of 4 tosses by a fair coin 5/16 1/4 3/16 7/16 Reveal answer Fill a bubble to check yourself A Correct answer Explanation Total outcomes for 4 tosses = 2^4 = 16. 'At least 3 heads' includes 3 heads (4C3 = 4 ways) and 4 heads (4C4 = 1 way). Total favorable outcomes = 4 + 1 = 5. Thus, the probability is 5/16.