Combined Probability and Combinatorics Question

[alexandraferkul]

Hello,

I was watching through a Data Analysis video and wanted to make sure I’m approaching this combination correctly.

In the image above, if it were to ask for the probability for two days, would I have to add in a step to find the number of arrangements to multiply by the probability of wearing the shirt twice?

Thank you

[alexandraferkul]

With this reasoning, this means that the (1-probability of no days) works without the additional calculation since there is only one arrangement of 0 days of rain?

[Leaderboard]

Yes.