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What kinds of Japanese numbers have different pronunciations, and under what circumstances can they be used?

Japanese numeral pronunciation

1 いち 2 に 3 さん 4 よん(し) 5 ご 6 ろく 7 なな(しち) 8 はち 9きゅう(く) 10 じゅう

I don't know what to do, but I don't know what to do.

When calculating the number of words in units, see/zxddzy/YY/12/542/553/565/575.htm for other figures.