Mathematics · 2021
JEE Main · 4 August 2021, Shift 2 · Q65
A fair coin is tossed n times. If the probability of getting 6 heads is equal to that of getting 8 tails, then the probability of getting 2 heads, is
A fair coin is tossed $\displaystyle n$ times. If the probability of getting $\displaystyle 6$ heads is equal to that of getting $\displaystyle 8$ tails, then the probability of getting $\displaystyle 2$ heads, is
Official answer
(1)
$\displaystyle \frac{91}{2^{14}}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.