In Exercises 3740, determine whether each statement makes sense or does not make sense, and explain your
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In Exercises 37–40, determine whether each statement makes sense or does not make sense, and explain your reasoning.
This triangular arrangement of 36 circles illustrates that
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1+2+3+... + n = is true for n = 8. 888 50 388 388 n(n + 1) 2
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