diff --git a/1_div.py b/1_div.py
new file mode 100644
index 0000000..6ac2262
--- /dev/null
+++ b/1_div.py
@@ -0,0 +1,10 @@
+n=500
+flag=0
+sum=0
+for i in range(1,n):
+	if((i%5==0)and(i%7!=0)):
+		flag=1
+		sum=sum+i
+if(flag==1):
+	print(int(sum))
+
diff --git a/2_arealb.py b/2_arealb.py
new file mode 100644
index 0000000..f1d348c
--- /dev/null
+++ b/2_arealb.py
@@ -0,0 +1,7 @@
+l=6
+b=8
+h=10
+inl=l+0.15*l
+inb=b+0.15*b
+a=inl*inb
+print(a)
diff --git a/3_sort.py b/3_sort.py
new file mode 100644
index 0000000..81b7e03
--- /dev/null
+++ b/3_sort.py
@@ -0,0 +1,6 @@
+list1=["Ron","Hermione","Harry","Professor","Dobby"]
+list2=["The House Elf","Potter","Granger","Lockhart","Weasely"]
+def concat(list1,list2):
+	return(sorted(list1)+sorted(list2))
+list3=concat(list1,list2)
+print(list3)
diff --git a/6_prime.py b/6_prime.py
new file mode 100644
index 0000000..b237dcb
--- /dev/null
+++ b/6_prime.py
@@ -0,0 +1,12 @@
+n=1000000
+i=1
+j=1
+for i in range(1,n):
+	count=0
+	for j in range(1,n):
+		if i%j==0:
+			count+=1	
+	if count==2:
+		print(i)
+	
+
diff --git a/7_palindrome.py b/7_palindrome.py
new file mode 100644
index 0000000..c1696f7
--- /dev/null
+++ b/7_palindrome.py
@@ -0,0 +1,13 @@
+i=0
+flag=0
+s1=input("enter string")
+n=len(s1)
+for i in range(1,n):
+	if(s1[i]!=s1[n-i-1]):
+		flag=1
+		break
+if(flag==1):
+	print("string is not palindrome")
+else:
+	print("string is palindrome")
+