Sum of two ideals is Finitely generated

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Suppose $I$ and $J$ are finitely generated ideals in comm ring $R$ then $I+J$ is finitely generated.

Question is converse for this.

  • Suppose $I+J$ is finitely generated then $I$ and $J$ are finitely generated?

  • Suppose $I+J$ is finitely generated and $I$ is finitely generated then $J$ is finitely generated?

  • Suppose $I+J$ is finitely generated and $I$ is nilpotent finitely generated then $J$ is finitely generated?

I tried proving, failed. Tried to give some counterexamples, failed.

I am sure at least third point is true.

Suggest some hints. Any remarks regarding this if not hints are most welcome.