SOLUTION: 2+4+6+.....2n=n(n+1)
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Question 1011842: 2+4+6+.....2n=n(n+1)
Answer by ikleyn(52776) (Show Source): You can put this solution on YOUR website!
.
2+4+6+.....2n = 2*(1 + 2 + 3 + . . . + n) = = n*(n+1).
By the way, were there no a question in your post.
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