Question

On the world environment day tree plantation programme was arranged on a land which is triangular in shape. Trees are planted such that in the first row there is one tree, in the second row there are two trees, in the third row three trees and so on. Find total number of trees in the 25 rows.​

Answer 1

Answer:

$\frac{25(26)}{2} = 325$

There are 325 trees in the 25 rows.

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Answer 2

Explanation:

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