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Probability
Binomial Probability
JEE Main 2021
Grade 12

Question:

A fair coin is tossed 6 times. The probability of getting at least one head is:
(1) $\frac{31}{32}$
(2) $\frac{63}{64}$
(3) $\frac{1}{64}$
(4) $\frac{1}{2}$

Step-by-Step Solution

Key Concept: It is easier to find the probability of the complementary event — getting no head at all in 6 tosses — and subtract this from 1.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer: (2)

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