brae72
brae72
09.06.2020 • 
Mathematics

Out of 100 people who attended a concert (pre-Corona obviously), 26 bought a teeshirt and 42 sat in the lawn section. Six students who sat in the lawn section also bought tee shirts. If a person who attended the concert was randomly selected, what is the probability that they bought a teeshirt if it is known that they did not sit in the lawn section? The first term in a geometric series is 5 and the common ratio is 2. Find the sum of the first 10 terms in the series.

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