Easy #7

On my side of the street the houses are numbered 2 , 4 , 6 , 8 , 10 , 12 , 14 2,4,6,8,10,12,14 and 16 16 . My house is positioned so that the sum of all the house numbers to the left of me is the same as the sum of all those to the right of me. What is my house number?


The answer is 12.

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1 solution

Charlton Teo
Jul 27, 2014

We simply observe that 2+4+6+8+10 = 14+16, Thus the answer is 12

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