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Chapter 8: Problem 61
Solve by the method of your choice. From a club of 20 people, in how many ways can a group of three members be selected to attend a conference?
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In Exercises \(15-22,\) find the indicated term of the arithmetic sequence with first term, \(a_{1},\) and common difference, \(d\) Find \(a_{200}\) when \(a_{1}=-40, d=5\)
What is the common difference in an arithmetic sequence?
Use the formula for the general term (the nth term) of a geometric sequence to find the indicated term of each sequence with the given first term, a1, and common ratio, r. Find \(a_{30}\) when \(a_{1}=8000, r=-\frac{1}{2}.\)
Determine whether each statement makes sense or does not make sense, and explain your reasoning. I used the Fundamental Counting Principle to determine the number of five- digit ZIP codes that are available to the U.S. Postal Service.
A single die is rolled twice. Find the probability of rolling an odd number the first time and a number less than 3 the second time.
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