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Sarah and Paula are flipping coins. During each round, each one flips a fair coin and then they compare their results. What is the probability that both girls flip their first tails during the same round?

Respuesta :

abdulub2

Answer:

[tex]1/3[/tex]

Step-by-step explanation:

The rounds that give two heads can be neglected.

Looking at the first round that gives at least one tail let T

denotes the number of tails is that round

[tex]P(T=2\mid T\geq1)=\frac{P(T=2)}{P(T\geq1)}=\frac{1/4}{3/4}=\frac13[/tex]

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