Hello, Ventus!

Do you knowabout Geometric Series?anything

The sum of the first three terms of a geometric series is 21.

The sum of terms 4 through 6 is 168.

Find the first three terms.

The first six terms are: .

We are told: .

Divide [2] by [1]: .

. . And we have: .

Substitute into [1]: .

Therefore, the first three terms are: .