Mathematics · 2021
JEE Main · 26 February 2021, Shift 1 · Q75
A fair coin is tossed a fixed number of times. If the probability of getting 7 heads is equal to probability of getting 9 heads, then the probability…
A fair coin is tossed a fixed number of times. If the probability of getting $\displaystyle 7$ heads is equal to probability of getting $\displaystyle 9$ heads, then the probability of getting $\displaystyle 2$ heads is :
Official answer
(3)
$\displaystyle \frac{15}{2^{13}}$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.