diff --git a/assignment/assignment10.html b/assignment/assignment10.html
index 20edc6d1c3e87a7f93330dd52fe22a20cb20dc91..7230c664d5b5c8598058dde9c16afbd33efd2610 100644
--- a/assignment/assignment10.html
+++ b/assignment/assignment10.html
@@ -342,9 +342,9 @@ d.	How effectively the carbon filter removes the carbon particles from the smoke
 									<h2>Back</h2>
 								</header>
 								<ul class="style1">
-								<li class="first"><a href="assignment7.html">Assignment 9</a></li> <br>
-								<li><a href="assignment6.html">Assignment 8</a></li> <br>
-								<li><a href="assignment6.html">Assignment 7</a></li> <br>
+								<li class="first"><a href="assignment9.html">Assignment 9</a></li> <br>
+								<li><a href="assignment8.html">Assignment 8</a></li> <br>
+								<li><a href="assignment7.html">Assignment 7</a></li> <br>
 								<li><a href="assignment6.html">Assignment 6</a></li> <br>
 								<li><a href="assignment5.html">Assignment 5</a></li> <br>
 								<li><a href="assignment4.html">Assignment 4</a></li> <br>
@@ -357,7 +357,7 @@ d.	How effectively the carbon filter removes the carbon particles from the smoke
 						<div class="6u">
 							<section id="box2">
 								<header>
-									<h2> <a href="assignment9.html">Assignment 11: Output Devices </a></h2>
+									<h2> <a href="assignment11.html">Assignment 11: Output Devices </a></h2>
 								</header>
 								<div> <a href="assignment10.html" class="image full"><img src="img/" alt=""></a> </div>
 								<p>Write about assignment 11.</p>
@@ -369,14 +369,14 @@ d.	How effectively the carbon filter removes the carbon particles from the smoke
 									<h2>Next</h2>
 								</header>
 								<ul class="style1">					
-									<li class="first"><a href="assignment11.html">Assignment 12</a></li> <br>
-									<li><a href="assignment12.html">Assignment 13</a></li> <br>
-									<li><a href="assignment12.html">Assignment 14</a></li> <br>
-									<li><a href="assignment13.html">Assignment 15</a></li> <br>
-									<li><a href="assignment14.html">Assignment 16</a></li> <br>
-									<li><a href="assignment15.html">Assignment 17</a></li> <br>
-									<li><a href="assignment16.html">Assignment 18</a></li> <br>
-									<li><a href="assignment17.html">Assignment 1</a></li> <br>
+									<li class="first"><a href="assignment12.html">Assignment 12</a></li> <br>
+									<li><a href="assignment13.html">Assignment 13</a></li> <br>
+									<li><a href="assignment14.html">Assignment 14</a></li> <br>
+									<li><a href="assignment15.html">Assignment 15</a></li> <br>
+									<li><a href="assignment16.html">Assignment 16</a></li> <br>
+									<li><a href="assignment17.html">Assignment 17</a></li> <br>
+									<li><a href="assignment18.html">Assignment 18</a></li> <br>
+									<li><a href="assignment1.html">Assignment 1</a></li> <br>
 								
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diff --git a/assignment/assignment9.html b/assignment/assignment9.html
index 7b0b3c26e26692fd1a02b0459336cabbe153fe62..495ad797f8029f96810797791352ebce5aff4c4e 100644
--- a/assignment/assignment9.html
+++ b/assignment/assignment9.html
@@ -296,8 +296,8 @@ in Eagle software is as belows.		  </strong> </p>
 									<h2>Back</h2>
 								</header>
 								<ul class="style1">
-								<li class="first"><a href="assignment7.html">Assignment 8</a></li> <br>
-								<li><a href="assignment6.html">Assignment 7</a></li> <br>
+								<li class="first"><a href="assignment8.html">Assignment 8</a></li> <br>
+								<li><a href="assignment7.html">Assignment 7</a></li> <br>
 								<li><a href="assignment6.html">Assignment 6</a></li> <br>
 								<li><a href="assignment5.html">Assignment 5</a></li> <br>
 								<li><a href="assignment4.html">Assignment 4</a></li> <br>
@@ -311,7 +311,7 @@ in Eagle software is as belows.		  </strong> </p>
 						<div class="6u">
 							<section id="box2">
 								<header>
-									<h2> <a href="assignment9.html">Assignment 10: Applications and Implications </a></h2>
+									<h2> <a href="assignment10.html">Assignment 10: Applications and Implications </a></h2>
 								</header>
 								<div> <a href="assignment10.html" class="image full"><img src="img/" alt=""></a> </div>
 								<p>Write about assignment 10.</p>