How many different subsets of the set {0, 1, 2, 3, 4…

How many different subsets of the set {0, 1, 2, 3, 4, 5,6,} do not contain 0?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #209

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