Question

A child wishes to build up a triangular pile of toy bricks so as to have 1 brick in the first row, 2 in the second row, 3 in the third row amd so on. If he has 100 bricks how many rows can be completed and how many bricks will remain un utilized.

Answer 1

we can get 13 rows and 9 bricks remaining from 100 as it is not possible with an extra rows because we want 14 ricks