SOLUTION: Find the sum of all positive even integers from 1-100
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Question 980120: Find the sum of all positive even integers from 1-100
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Find the sum of all positive even integers from 1-100
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There are 50 of them from 2 to 100
--> 25 pairs
2 + 100 = 102
4 + 98 = 102
6 + 96 = 102
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25 pairs * 102 = 2550
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
if an even number is , then we have
; so, there is even numbers from to
biggest even number is , smallest is , so average of biggest and smallest even number is
then, the sum of first positive integers is
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