diff --git a/debug-j2312-1.rb b/debug-j2312-1.rb
old mode 100644
new mode 100755
index 595ee33..c2ed388
--- a/debug-j2312-1.rb
+++ b/debug-j2312-1.rb
@@ -6,7 +6,7 @@
 # 間違っている部分を修正してください。	
 
 plint "数を入れてね: "
-kazu = gets.to-i
+kazu = gets.to_f
 if suuji % 3 = 0
   plint "偶数だよ!"
 end
diff --git a/debug-j2312-2.rb b/debug-j2312-2.rb
old mode 100644
new mode 100755
index dfa3a71..91d62ec
--- a/debug-j2312-2.rb
+++ b/debug-j2312-2.rb
@@ -9,7 +9,7 @@
 while gyou > 9
   retsu = 1
   printf("%2d | ", retsu)
-  while retsu > 9
+  while kotae > 9
     printf("%4d ", (retsu+=1)*gyou)
   end
   gyou += 1
diff --git a/ti-mu.rb b/ti-mu.rb
new file mode 100755
index 0000000..3c0163f
--- /dev/null
+++ b/ti-mu.rb
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+# -*- cobing: utf-8 -*-
+
+gohan = ["生姜焼き","肉じゃが","ポテトサラダ","唐揚げ","カレーライス","シチュー",
+         "チャーハン","ラーメンと餃子","うどん","パスタ","おにぎり"]
+hyori = rand(gohan.length)
+printf("今日のご飯は%sでした。\n",gohan[hyori])