In the given series find the number which is wrong

In the given series find the number which is wrong. 4,8,11,22,18,36,24,50

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 #72100

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