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What is the sum of the multiples of 2 from 2 to 10 . everyone knows the simple answer but What is the formula to calculate this?
Wiki User
∙ 13y ago
The sequence of numbers is 2n where n goes from 1 to 5
Now
sum (over n=1 to 5) of 2n = 2*sum (over n=1 to 5) of n
= 2 * [5*(5+1)]/2 = 5*6 = 30
Wiki User
∙ 13y ago
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