diff --git a/knoda/test/C065_AnswerNumberTest.java b/knoda/test/C065_AnswerNumberTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..107ef176b76cab06d144ab80a3b7f21fafc0e41a
--- /dev/null
+++ b/knoda/test/C065_AnswerNumberTest.java
@@ -0,0 +1,83 @@
+package hellojunit;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.experimental.runners.Enclosed;
+import org.junit.runner.RunWith;
+
+@RunWith(Enclosed.class)
+public class C065_AnswerNumberTest {
+	
+	public static class 
+		ヒントの記号が大なり小なりスラッシュのみかつ正の整数が100以下のとき {
+		
+		List<String> symbolList;
+		List<Integer> numList;
+		
+		@Test
+		public void 出力が35になるテスト() {
+			symbolList = new ArrayList<String>(Arrays.asList(">", "<", "/"));
+			numList = new ArrayList<Integer>(Arrays.asList(30, 40, 5));
+			int actual = C065_AnswerNumber.getAnswer(symbolList, numList);
+			int expected = 35;
+			assertThat(actual, is(expected));
+		}
+		
+		@Test
+		public void 出力が84になるテスト() {
+			symbolList = new ArrayList<String>(Arrays.asList("/", "<", "/", ">"));
+			numList = new ArrayList<Integer>(Arrays.asList(4, 90, 6, 77));
+			int actual = C065_AnswerNumber.getAnswer(symbolList, numList);
+			int expected = 84;
+			assertThat(actual, is(expected));
+		}
+	}
+
+	public static class
+		ヒントの記号が大なり小なりスラッシュ以外を含むとき {
+		
+		List<String> symbolList;
+		List<Integer> numList;
+		
+		@Test
+		public void 出力が0になるテスト1() {
+			symbolList = new ArrayList<String>(Arrays.asList(">", "<", "/", "+"));
+			numList = new ArrayList<Integer>(Arrays.asList(30, 40, 5, 4));
+			int actual = C065_AnswerNumber.getAnswer(symbolList, numList);
+			int expected = 0;
+			assertThat(actual, is(expected));
+		}
+		
+		@Test
+		public void 出力が0になるテスト2() {
+			symbolList = new ArrayList<String>(Arrays.asList("/", "<", "*", "/", ">"));
+			numList = new ArrayList<Integer>(Arrays.asList(4, 90, 12, 6, 77));
+			int actual = C065_AnswerNumber.getAnswer(symbolList, numList);
+			int expected = 0;
+			assertThat(actual, is(expected));
+		}
+	}
+	
+	public static class
+		ヒントが100以上の整数を含むとき {
+		
+		List<String> symbolList;
+		List<Integer> numList;
+		
+		@Test
+		public void 出力が0になるテスト() {
+			symbolList = new ArrayList<String>(Arrays.asList("/", "<", "/", ">"));
+			numList = new ArrayList<Integer>(Arrays.asList(20, 200, 5, 100));
+			int actual = C065_AnswerNumber.getAnswer(symbolList, numList);
+			int expected = 0;
+			assertThat(actual, is(expected));
+		}
+		
+	}
+}