--- loncom/homework/radiobuttonresponse.pm	2011/06/07 17:27:37	1.149
+++ loncom/homework/radiobuttonresponse.pm	2011/08/26 22:40:17	1.150
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # mutliple choice style responses
 #
-# $Id: radiobuttonresponse.pm,v 1.149 2011/06/07 17:27:37 www Exp $
+# $Id: radiobuttonresponse.pm,v 1.150 2011/08/26 22:40:17 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -555,8 +555,12 @@ sub whichfoils {
 	    $dosplice=0;
 	} else {
 	    if ($topcount>0 || $bottomcount>0) {
-		$answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
-		    + $topcount;
+                my $inc = 1;
+                if (($bottomcount > 0) && ($Apache::lonhomework::type ne 'exam')) {
+                    $inc = 2;
+                }
+                $answer=int(&Math::Random::random_uniform() * ($#whichfalse+$inc))
+                        + $topcount;
 	    }
 	}
 	&Apache::lonxml::debug("Answer now wants $answer");