diff --git a/Q11.js b/Q11.js
new file mode 100644
index 0000000..843fb75
--- /dev/null
+++ b/Q11.js
@@ -0,0 +1,25 @@
+/**
+ * what will be the output of the following code?
+ */
+
+/** Q1 */
+
+console.log(0.1 + 0.2 == 0.3);
+console.log(0.1 + 0.2 === 0.3);
+
+console.log([] === []);
+
+console.log({} === {});
+
+var person = {
+    name:"ravi",
+    greet: function(){
+        return "Hello " + this.name;
+    }
+}
+
+var greetFn = person.greet;
+
+console.log(greetFn());
+
+console.log(person.greet());
\ No newline at end of file
diff --git a/Q12.js b/Q12.js
new file mode 100644
index 0000000..8565acb
--- /dev/null
+++ b/Q12.js
@@ -0,0 +1,11 @@
+/**
+ * write a function to find missing numbers in an array in sequence 0-10
+ */
+
+var arr = [1, 2, 4, 6, 9];
+
+for (let i = 1; i <= 10; i++) {
+  if (!arr.includes(i)) {
+    console.log(i);
+  }
+}