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549：おさかなくわえた名無しさん：2011/10/26(水) 01:15:01.99 ID:t7UFz6m0

数学で「ほぼ等しい」を表す「≒」の記号が、
日本でしか使われていないこと。
“
— 【知ってた？】あなたが最近知ってびっくりしたことって何？？スレ146-2 : えっ!?またここのサイト? (via 13py2)
Reblogged 6 months ago from allgreendays (originally from 13py2)
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