1. ## Reforestation (arithmetic progression)

This is a rather simple A.P. problem, but I couldn't solve it anyway.

In a reforestation project, seedings will be planted in straight lines. The first line will have 2 seedings, the second will have 4 seedings, the third, 6, and so on.

The 992nd seeding will be located in which line?

Any help?
Thanks.

2. Originally Posted by nvwxgn
This is a rather simple A.P. problem, but I couldn't solve it anyway.

In a reforestation project, seedings will be planted in straight lines. The first line will have 2 seedings, the second will have 4 seedings, the third, 6, and so on.

The 992nd seeding will be located in which line?

Any help?
Thanks.
Use the sum of an arithmetic sequence and set equal to 992.

$\displaystyle S_n = \frac{n}{2}(2a+(n-1)d)$

a and d are easy to find from the data given

3. Figured it out, it's 31.

Thanks