diff --git a/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q1.c b/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q1.c
new file mode 100644
index 0000000..9d6fbc2
--- /dev/null
+++ b/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q1.c
@@ -0,0 +1,17 @@
+#include<stdio.h>
+int main()
+{
+    int n=3;
+    for(;n!=1;)
+    {
+    if(n%2==0){
+        n/=2;
+    }
+    else 
+    {
+       n=n*3+1;
+    }}
+    printf("The value of n is %d",n);
+    return 0;
+    
+}
\ No newline at end of file
diff --git a/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q2.c b/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q2.c
new file mode 100644
index 0000000..0aa082d
--- /dev/null
+++ b/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q2.c
@@ -0,0 +1,19 @@
+#include<stdio.h>
+
+int main()
+{
+    int N, sum = 0;
+
+    printf("Enter the value of n: ");
+    scanf("%d", &N);
+
+    for (int i = 3; i < N; i++) {
+        if (i % 3 == 0 || i % 5 == 0) {
+            sum += i;
+        }
+    }
+
+    printf("The sum is %d", sum);
+
+    return 0;
+}
\ No newline at end of file
diff --git a/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q3.c b/2nd_sem/Pull_Requests/Akshat_Fartade_DS_05/q3.c
new file mode 100644
index 0000000..e69de29