Determine if the series is convergent or divergent 20-15+10- a) convergent b) divergent

Option b is correct.

The series 20-15+10-5....is Divergent

Step-by-step explanation:

Alternating series Test:

satisfies:

Then the series converges,

otherwise diverges.

Given the series: 20-15+10-5....

This is a alternating series:

using the alternating series test;

 for all n

⇒ the series diverges.

therefore, the given series i,e 20-15+10-5.... is divergent.

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step-by-step explanation: