QJEEM19Ma90f2: JEE Main 2019 Mathematics - Class 12 JEEM19Ma90f2 Solution: Minimum number of times a fair coin must be tossed so that the…

Question

Verified Solution • 2025–26 Session moderate

Minimum number of times a fair coin must be tossed so that the probability of getting at least one head is more than 99% is :

Accepted Answer

1 - {(\frac{1}{2})}^{n} > \frac{99}{100}

{(\frac{1}{2})}^{n} < \frac{1}{100}

\Rightarrow

n = 7

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