What is the minimum possible number of Steamposium attendees given the 400+ figure?

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Multiple Choice

What is the minimum possible number of Steamposium attendees given the 400+ figure?

Explanation:
Understanding how to read a lower-bound figure is key here. When you see a number with a plus sign, like 400+, it means “at least that many.” The smallest whole-number count that satisfies “at least 400” is exactly 400 itself. So the minimum possible Steamposium attendees must be 400. The other options either fall short of the bound (making them impossible) or exceed it (they’re valid counts but not the minimum).

Understanding how to read a lower-bound figure is key here. When you see a number with a plus sign, like 400+, it means “at least that many.” The smallest whole-number count that satisfies “at least 400” is exactly 400 itself. So the minimum possible Steamposium attendees must be 400. The other options either fall short of the bound (making them impossible) or exceed it (they’re valid counts but not the minimum).

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