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# The probability that Frances gets a line busy whenever she calls to Michael is $\dfrac{2}{3}$ . She makes one call to Michael on each of the 4 consecutive days. Probability that the call is busy on each of the four days?

Last updated date: 22nd Jul 2024
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According to the question, we are given that France is someone who calls Michael and whenever he calls, he finds that line is busy with the probability of $\dfrac{2}{3}$. Also, we have been given that she does not call him daily but only on the four consecutive days. That means he calls Michael every day once and does so till four consecutive days.
Now, the probability of a call being busy is $\dfrac{2}{3}$and similarly for every day it will remain the same as no further information is given.
So, the probability for four consecutive days is $\dfrac{2}{3}\times \dfrac{2}{3}\times \dfrac{2}{3}\times \dfrac{2}{3}=\dfrac{16}{81}$ .
Therefore, the probability of the given question is $\dfrac{16}{81}$ .