A certain street has houses in a row, numbered 1, 2, 3, 4, … consecutively. There is a certain house on the street such that the sum of all the house numbers to the left side of it is equal to the sum of all the house numbers to its right. Find the number of this house.?,
Below run against forumala 2h2 = n(n+1)
Number of houses (n) | House Number (h) |
8 | 6 |
49 | 35 |
288 | 204 |
1681 | 1189 |
9800 | 6930 |
57,121 | 40,391 |
332,928 | 235,416 |
1,940,449 | 1,372,105 |
... | ... |
11,309,768 | 79,97,214 |