Question

A coin is flipped 8 times. Find the probability of the event exactly 4 heads

Answer 1

Let the event of getting 4 heads be E.

Since for the event the outcomes can be 2.

the total outcomes

${2}^{8}$

which is equal to 256.

since for getting 4 heads there need to be 4 tails hence the no of outcomes of event E=8!/4! 4!

= 70 answer

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