diff --git a/odd.cpp b/odd.cpp
new file mode 100644
index 0000000..8f64106
--- /dev/null
+++ b/odd.cpp
@@ -0,0 +1,17 @@
+#include <vector>
+using namespace std;
+int findOdd(const vector<int> numbers){
+  int x = 0,ans = 0;
+  for(int i = 0 ; i < numbers.size() ; i++){
+    x=0;
+    for (int j = 0 ;j < numbers.size() ; j++){
+    if (numbers[i] == numbers[j]){
+          x += 1;
+        }
+      }
+      if (x % 2 != 0){
+      ans=numbers[i];
+    }
+  }
+return ans;
+}
diff --git a/sum.cpp b/sum.cpp
new file mode 100644
index 0000000..6328857
--- /dev/null
+++ b/sum.cpp
@@ -0,0 +1,20 @@
+#include <vector>
+#include <iostream>
+using namespace std;
+int digital_root(int n)
+{
+  int sum = 0 ;
+  int a = 0;
+  while (sum < 10) {
+    sum += n /10;
+  }
+  if (sum >= 10){
+    while (a < 10){
+      a += sum % 10;
+    }
+    return a;
+  }
+  else{
+    return sum;
+  }
+}
\ No newline at end of file