Four girls take turns flipping a fair coin until a head appears. What is the probability that the first girl is the first to flip a head?

Mathematics
Competition
Math League
Exam No:2024 First Round Grades 8-9 Year:2024 Question No:20

Answer:

8/15

Knowledge points:

G8-9 - Geometry - Triangle Properties (Isosceles & Equilateral)

Solution:

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