diff --git a/Problem Set 0 Basic/Hello world.py b/Problem Set 0 Basic/Hello world.py
new file mode 100644
index 0000000..c16e6f3
--- /dev/null
+++ b/Problem Set 0 Basic/Hello world.py	
@@ -0,0 +1,5 @@
+
+#program name:hello world
+#author name : AL- Ekram Hossain Abir
+#program to write a text:
+print("Hello World")
diff --git a/Problem Set 4 String/Alphabet Vowel or Consonant.py b/Problem Set 4 String/Alphabet Vowel or Consonant.py
new file mode 100644
index 0000000..deec253
--- /dev/null
+++ b/Problem Set 4 String/Alphabet Vowel or Consonant.py	
@@ -0,0 +1,11 @@
+#Vowel or constant
+#author name:Al- Ekram Hossain ABir
+import string
+vowel='aeiouAEIOU'
+char='A'
+if char not in string.ascii_letters:
+    print("NOT VAlid")
+elif char in vowel:
+    print("Vowel")
+else:
+    print("Consonent")
diff --git a/hello world.py b/hello world.py
new file mode 100644
index 0000000..593140f
--- /dev/null
+++ b/hello world.py	
@@ -0,0 +1,4 @@
+#program name:hello world
+#author name : AL- Ekram Hossain Abir
+#program to write a text:
+print("Hello World")