diff --git a/1_sum.py b/1_sum.py
new file mode 100644
index 0000000..a43d46e
--- /dev/null
+++ b/1_sum.py
@@ -0,0 +1,6 @@
+i=1;sum=0;
+for i in range(1,500):
+   if(i%5==0 and i%7!=0):
+       sum=sum+i;
+print("sum is:");
+print(sum);
diff --git a/2_area.py b/2_area.py
new file mode 100644
index 0000000..1f35b4e
--- /dev/null
+++ b/2_area.py
@@ -0,0 +1,7 @@
+il=6;iw=8;ih=10;
+fl=1.15*6;fw=1.15*8;fh=1.15*10;
+sa=(2*fl*fw)+(2*fw*fh)+(2*fl*fh);
+print("surface area:");
+print(sa);
+
+
diff --git a/3_sortlists.py b/3_sortlists.py
new file mode 100644
index 0000000..eaacd67
--- /dev/null
+++ b/3_sortlists.py
@@ -0,0 +1,4 @@
+list=['Ron','Hermione','Harry','Professor','Dobby','List Items 2','The House Elf','Potter','Granger','Lockhart','Weasley'];
+list2=sorted(list);
+list3=['Potter','Fred','Greg','George','Voldemort','Sirius','Dumbledore'];
+print(list2+list3);
diff --git a/4_triplet.py b/4_triplet.py
new file mode 100644
index 0000000..359ca6d
--- /dev/null
+++ b/4_triplet.py
@@ -0,0 +1,9 @@
+for i in range(1,1000):
+	
+  for j in range(i+1,1000):
+		
+      k=1000-(i+j)
+      if (i**2)+(j**2)==(k**2):
+         if i+j+k==1000:
+            print(i*j*k)
+            break
diff --git a/5_small20.py b/5_small20.py
new file mode 100644
index 0000000..7ef50a4
--- /dev/null
+++ b/5_small20.py
@@ -0,0 +1,14 @@
+def gcd(a,b):
+    rem=0;
+    while(b>0):
+       rem=a%b;
+       a=b;
+       b=rem;
+    return a;
+x=gcd(1,2);
+y=(1*2)//x;
+z=y;
+for i in range(1,19):
+   k=i+2;
+   z=(z*k)//gcd(z,k);
+print(z);
diff --git a/6_prime.py b/6_prime.py
new file mode 100644
index 0000000..1e86fd9
--- /dev/null
+++ b/6_prime.py
@@ -0,0 +1,8 @@
+for i in range(1,99999):
+   c=0;
+   for j in range (1,i+1):
+     if(i%j==0):
+        c=c+1;
+   if(c==2):
+      print(i,' ',end='');
+     
diff --git a/7_palindrome b/7_palindrome
new file mode 100644
index 0000000..7032ee4
--- /dev/null
+++ b/7_palindrome
@@ -0,0 +1,12 @@
+s=input("string:");
+le=len(s);
+s1=list();
+for i in range(0,le):
+    k=s[le-i-1];
+    s1.append(k);
+
+s2=''.join(s1);
+if(s==s2):
+   print("palindromes");
+else:
+   print("not palindrome");