Mathematics · 2021
JEE Main · 25 July 2021, Shift 2 · Q85
A fair coin is tossed n-times such that the probability of getting at least one head is at least 0.9. Then the minimum value of n is \ \ \ \.
A fair coin is tossed n-times such that the probability of getting at least one head is at least 0.9. Then the minimum value of n is \_\_\_\_.
Official answer
4
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.