Sarah and Paula are flipping coins. During each round, each one flips a fair coin and then they compare their results. What is the probabili

Question

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?

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Genesis 1 week 2021-09-14T03:26:57+00:00 1 Answer 0

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    2021-09-14T03:28:37+00:00

    Answer:

    1/3

    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

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

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45:7+7-4:2-5:5*4+35:2 =? ( )