30 Brothers each attend the daily sunset service 4 times a week. Whilst they are all present on Sunday, the numbers present throughout the week varies from day to day. Alan wanted to learn more about the religion. He knew the Brothers were in great demand for their knowledge and wisdom but he could only make the Friday service. Checking the notice board outside the steps, he saw the following:

-The Brothers attending on Monday, also go on Tuesdays and Wednesdays.
-Twice as many go on Wednesday as Monday.
-The number present on Tuesday is the sum of the number on Wednesday and Thursday.
-Those attending on Friday or Saturday do not go to the Thursday service.
-Half as many go on Thursday as on Monday.
-They don't all go on Tuesday.
How many Brothers would be at the temple for him to talk to?

2 answers

This surely is not psychology.