diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/kotlin/Program2/README.md b/kotlin/Program2/README.md
new file mode 100644
index 00000000..2de265c9
--- /dev/null
+++ b/kotlin/Program2/README.md
@@ -0,0 +1 @@
+Q2. Write a program to plus and minus with sample of extension function from kotlin
diff --git a/kotlin/Program2/extension.kt b/kotlin/Program2/extension.kt
new file mode 100644
index 00000000..30593f4e
--- /dev/null
+++ b/kotlin/Program2/extension.kt
@@ -0,0 +1,15 @@
+fun main(args: Array<String>) {
+    println("Basic Extension Function")
+    val plus = 2.plusNumber(2)
+    val minus = 2.minusNumber(2)
+    println("2 + 2 : $plus")
+    println("2 - 2 : $minus")
+}
+
+fun Int.plusNumber(number: Int): Int {
+    return this + number
+}
+
+fun Int.minusNumber(number: Int): Int {
+    return this - number
+}
\ No newline at end of file
diff --git a/kotlin/README.md b/kotlin/README.md
index 282dd5fa..73c15c50 100644
--- a/kotlin/README.md
+++ b/kotlin/README.md
@@ -4,5 +4,6 @@
 | Program No.| Question |
 | ------- | ------ |
 | [Program-1](https://github.com/swaaz/basicprograms/blob/814a1e60ae23d81158d8174666f23c9b7419e15e/kotlin/Program1/pattern.kt) | Write a program to print half pyramid using ' * '
+| [Program-2](https://github.com/swaaz/basicprograms/blob/814a1e60ae23d81158d8174666f23c9b7419e15e/kotlin/Program2/extension.kt) | Q2. Write a program to plus and minus with sample of extension function from kotlin
   
 </div>