The counter 3足 is used for counting: 3 pairs of footwear (shoes, socks) (Category: 足 (soku/zoku) - Footwear pairs, JLPT N3). 三 (san) triggers rendaku (voicing) on the counter, changing 足 (soku) to 'zoku'.
Context Example
靴下を3足持っています。
Kutsushita o sanzoku motte imasu.
I have three pairs of socks.
Which counter represents "3 pairs of footwear (shoes, socks)"?
Correct! 🎉
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