Let b be a positive integer. Find the median of the set. b,3b,5b,7b,9b,11b,13b,15b...
MATHEMATICS
SAT 2021
Let b be a positive integer. Find the median of the set. b,3b,5b,7b,9b,11b,13b,15b
- A. 9b
- B. 11b
- C. 10b
- D. 8b
Correct Answer: D. 8b
Explanation
The median is the middle value of the set in increasing order. In this set of 8 (or any even number) entries, the median is the mean of the two middle entries of the set in increasing order (7b+9b)/2=8b
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