add 5
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Update RubyQ3-0517.txt
add answer5
Merge pull request #44 from Masahiro1118/master

すばらしい！提出ありがとうございます。
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file added Q6
Update RubyQ4-0524.txt
Merge pull request #45 from tarataa/master

ogawa
Merge github.com:y-matsumoto/TECH.C