Math for Educators
posted by Carol on .
Find the sum of the sequence.
38+39+40+41+...+137
The sum is?
My answer 175(99)= 17,325
Is this correct? If not how do I get the correct answer?

no, no.
first: there are 100 terms here.
second, how did you get 175 as the mean? 175 is greater than the highest term? The mean is 175/2
the mean is 137+38 divided by 2
one hundred terms x mean=below
sum= 100(38+137)/2=175*50=8750