How many of Delaiah, Tobiah, and Nekoda's offspring returned from Babylon?

God is not the author of confusion 1 Corinthians 14:33

The children of Delaiah, the children of Tobiah, the children of Nekoda, six hundred fifty and two. Ezra 2:60

The children of Delaiah, the children of Tobiah, the children of Nekoda, six hundred forty and two. Nehemiah 7:62

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