LV超3A名牌購物網
[ 口 ─ ( 6 x 3 ) ] = 0
= > 0 = [ 口 ─ ( 6 x 3 ) ]
= > 0 = [ 口 ─ ( 18 ) ]
= > 0 = 口 ─ 18
= > 口 = 18
Ans: 18顆
(希望這樣解~沒有錯~)
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