Answer:
Set A has a college student population with the sum closest to 78,000.
Explanation:
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First, we need to determine the sums of college student populations.
Set 1: 18,432 + 32, 761 + 27, 390 = 78, 583
Set 2: 15, 791 + 47, 318 + 27, 522 = 90, 631
Set 3: 22, 109 + 38, 569 + 32, 780 = 93, 458
Set 4: 27, 420 + 47, 338 + 22, 183 = 96, 941
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Now we determine the difference in populations between the given sets and 78,000...
Step 1: 78, 583 - 78, 000 = 583
Step 2: 90, 631 - 78, 00 = 12, 631
Step 3: 93, 458 - 78, 000 = 16, 458
Step 4: 96, 941 - 78, 000 = 18, 941
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Thus, the answer to your problem is, Set A.