Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The minimum number of times one has to toss a fair coin so that the probability of observing at least one head is at least 
is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
JEE Main 2019
Let, 
is probability for getting head and is probability for getting tail.
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