diff --git a/src/lab/exp10/simulation/index.htm b/src/lab/exp10/simulation/index.htm
index 3e03797c..b347f327 100644
--- a/src/lab/exp10/simulation/index.htm
+++ b/src/lab/exp10/simulation/index.htm
@@ -43,6 +43,7 @@
 		            <option> ( a + b ) * c - d </option>
 		            <option> ( a + b ) * ( c - d ) </option>
 		            <option> a * d % ( c - b ) * c - a * b </option>
+				<option> a*(b+c)</option>
 		        </select>
 		        <select class = 'button loopList hide' id = 'logicalExpressions' >
 		     		<option> a || b && c </option>
@@ -77,4 +78,4 @@
 			</div><!-- end of resultDisplay -->
 		</div><!-- end of outputDivision -->
 	</body>
-</html>
\ No newline at end of file
+</html>