Asked by kyle
When the sum of all the positive even numbers is 420, find the largest even number in the sequence.
Answers
Answered by
Steve
if there are n even numbers (starting at 2, and not skipping any), then
n/2 (2*2+(n-1)*2) = 420
n = 20
So, the largest is 40
n/2 (2*2+(n-1)*2) = 420
n = 20
So, the largest is 40
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