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Find the sum of all positive rational numbers that are less than 5, and that have a denominator of 30 when written in lowest terms.

 Jun 1, 2019
edited by Guest  Jun 1, 2019
 #1
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Not quite sure if I understand your question, but here is something to look at:

 

listforeach(n, (1, 7,  11,  13,  17,  19,  23,  29), c=n/30

 

 

SUM = (1 / 30,  7 / 30,  11 / 30,  13 / 30,  17 / 30,  19 / 30,  23 / 30,  29 / 30) = 4

 Jun 1, 2019

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