diff --git a/Basic/Calculate Nth Tribonacci Number/SolutionByPrabsimar.cpp b/Basic/Calculate Nth Tribonacci Number/SolutionByPrabsimar.cpp
new file mode 100644
index 000000000..5dafbaa8b
--- /dev/null
+++ b/Basic/Calculate Nth Tribonacci Number/SolutionByPrabsimar.cpp	
@@ -0,0 +1,33 @@
+//Tribonacci series
+#include <iostream>
+using namespace std;
+int tribonacci(int n)
+{
+    if (n == 1) {
+        return 0;
+    } else if (n == 2) {
+        return 0;
+    } else if (n == 3) {
+        return 1;
+    } else {
+        int a = 0;
+        int b = 0;
+        int c = 1;
+        int ans;
+        for (int i = 4; i <= n; i++) {
+            ans = a + b + c;
+            a = b;
+            b = c;
+            c = ans;
+        }
+        return ans;
+    }
+}
+int main()
+{
+    int num;
+    cout << "enter the num " << endl;
+    cin >> num;
+    cout << tribonacci(num);
+    return 0;
+}