A baker uses 4 cups of flour for each cake. He has 213 cups of flour in his shop. How many cakes can he make, and how much flour
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From the listed choices, you can prove the series diverges using either the integral or <em>p</em>-series test.
- Integral test:
We have
which diverges to infinity, so the series is divergent.
- <em>p</em>-series test:
The series
converges only for . In the given sum, we have
, so the series is divergent.