Find the Sum of the Infinite Geometric Series 3 , -15 , 75 , -375

$3$ , $- 15$ , $75$ , $- 375$

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by $- 5$ gives the next term. In other words, $a_{n} = a_{1} \cdot r^{n - 1}$ .

Geometric Sequence: $r = - 5$

The series given has a value of $r$ such that $r > 1$ or $r < - 1$ . Therefore, the infinite sum cannot be calculated.

No solution

Find the Sum of the Infinite Geometric Series 3 , -15 , 75 , -375

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