diff -Naur old/edit_multichoice_form.php new/edit_multichoice_form.php
--- old/edit_multichoice_form.php	2012-02-13 15:34:35.000000000 +0530
+++ new/edit_multichoice_form.php	2012-03-05 12:35:18.000000000 +0530
@@ -39,7 +39,7 @@
     function definition_inner(&$mform) {
         global $QTYPES;
 
-        $menu = array(get_string('answersingleno', 'qtype_multichoice'), get_string('answersingleyes', 'qtype_multichoice'));
+        $menu = array(get_string('answersingleno', 'qtype_multichoice'), get_string('answersingleyes', 'qtype_multichoice'), get_string('answertwo', 'qtype_multichoice'), get_string('answerthree', 'qtype_multichoice'));
         $mform->addElement('select', 'single', get_string('answerhowmany', 'qtype_multichoice'), $menu);
         $mform->setDefault('single', 1);
 
@@ -158,18 +158,22 @@
         }
 
         /// Perform sanity checks on fractional grades
-        if ($data['single']) {
+        if ($data['single']==1) {
             if ($maxfraction != 1) {
                 $maxfraction = $maxfraction * 100;
                 $errors['fraction[0]'] = get_string('errfractionsnomax', 'qtype_multichoice', $maxfraction);
-            }
-        } else {
+            } 
+        } 
+
+
+ else {
+		
             $totalfraction = round($totalfraction,2);
             if ($totalfraction != 1) {
                 $totalfraction = $totalfraction * 100;
                 $errors['fraction[0]'] = get_string('errfractionsaddwrong', 'qtype_multichoice', $totalfraction);
             }
-        }
+        } 
         return $errors;
     }
 }
diff -Naur old/qtype_multichoice.php new/qtype_multichoice.php
--- old/qtype_multichoice.php	2012-02-13 15:34:35.000000000 +0530
+++ new/qtype_multichoice.php	2012-03-05 10:48:42.000000000 +0530
@@ -26,6 +26,8 @@
 $string['addingmultichoice'] = 'Adding a Multiple choice question';
 $string['addmorechoiceblanks'] = 'Blanks for {no} more choices';
 $string['answerhowmany'] = 'One or multiple answers?';
+$string['answertwo'] = 'Two answers only';
+$string['answerthree'] = 'Three answers only';
 $string['answernumbering'] = 'Number the choices?';
 $string['answernumberingabc'] = 'a., b., c., ...';
 $string['answernumberingABCD'] = 'A., B., C., ...';
@@ -58,3 +60,8 @@
 $string['shuffleanswers'] = 'Shuffle the choices?';
 $string['shuffleanswers_help'] = 'If enabled, the order of the answers is randomly shuffled for each attempt, provided that "Shuffle within questions" in the quiz settings is also enabled.';
 $string['singleanswer'] = 'Choose one answer.';
+$string['twoanswer'] = 'Choose exactly two answers.';
+$string['threeanswer'] = 'Choose exactly three answers.';
+
+
+
diff -Naur old/questiontype.php new/questiontype.php
--- old/questiontype.php	2012-02-13 15:34:35.000000000 +0530
+++ new/questiontype.php	2012-03-05 12:37:09.000000000 +0530
@@ -134,12 +134,15 @@
         $DB->update_record('question_multichoice', $options);
 
         /// Perform sanity checks on fractional grades
-        if ($options->single) {
+        if ($options->single==1) {
             if ($maxfraction != 1) {
                 $result->noticeyesno = get_string('fractionsnomax', 'qtype_multichoice', $maxfraction * 100);
                 return $result;
             }
-        } else {
+        } 
+
+
+else {
             $totalfraction = round($totalfraction, 2);
             if ($totalfraction != 1) {
                 $result->noticeyesno = get_string('fractionsaddwrong', 'qtype_multichoice', $totalfraction * 100);
@@ -272,8 +275,35 @@
         // Print formulation
         $questiontext = format_text($question->questiontext, $question->questiontextformat,
             $formatoptions, $cmoptions->course);
-        $answerprompt = ($question->options->single) ? get_string('singleanswer', 'quiz') :
-            get_string('multipleanswers', 'quiz');
+        //$answerprompt = ($question->options->single) ? get_string('singleanswer', 'quiz') :
+          //  get_string('multipleanswers', 'quiz');
+
+
+
+if($question->options->single==1)
+{
+	$answerprompt = get_string('singleanswer', 'quiz');
+}
+
+else if($question->options->single==2)
+{
+	$answerprompt = get_string('twoanswer', 'quiz');
+}
+
+else if($question->options->single==3)
+{
+	$answerprompt = get_string('threeanswer', 'quiz');
+}
+
+else
+{
+	$answerprompt = get_string('multipleanswers', 'quiz');
+}
+
+
+
+
+
 
         // Print each answer in a separate row
         foreach ($state->options->order as $key => $aid) {
@@ -281,30 +311,142 @@
             $checked = '';
             $chosen = false;
 
-            if ($question->options->single) {
+
+            $a = new stdClass;
+            $a->id   = $question->name_prefix . $aid;
+            $a->class = '';
+            $a->feedbackimg = '';
+
+
+
+
+            if ($question->options->single==1) {
                 $type = 'type="radio"';
                 $name   = "name=\"{$question->name_prefix}\"";
                 if (isset($state->responses['']) and $aid == $state->responses['']) {
                     $checked = 'checked="checked"';
                     $chosen = true;
                 }
-            } else {
+
+$a->control = "<input $readonly id=\"$a->id\" $name $checked $type  value=\"$aid\" />";
+
+
+
+
+            } 
+
+
+
+/*else */ if ($question->options->single==2){
+
                 $type = ' type="checkbox" ';
                 $name   = "name=\"{$question->name_prefix}{$aid}\"";
                 if (isset($state->responses[$aid])) {
                     $checked = 'checked="checked"';
                     $chosen = true;
                 }
+
+?>
+           <!-- Print the control-->
+
+<script type="text/javascript">
+<!--
+
+var chkCnt1=0
+
+
+var maxChk1=2
+
+function Checks1(ins){
+
+if(ins.checked){
+chkCnt1=chkCnt1+1
+}else{
+chkCnt1=chkCnt1-1
+}
+
+if (chkCnt1>maxChk1){
+ins.checked=false
+chkCnt1=chkCnt1-1
+alert('you may only choose up to '+maxChk1+' options')
+}
+}
+//-->
+</script>
+</head>
+
+<?php
+$a->control = "<input $readonly id=\"$a->id\" $name $checked $type onclick=\"Checks1(this)\" value=\"$aid\" />";
+
+?>
+
+<?php
+
             }
 
-            $a = new stdClass;
-            $a->id   = $question->name_prefix . $aid;
-            $a->class = '';
-            $a->feedbackimg = '';
+if ($question->options->single==3){
 
-            // Print the control
-            $a->control = "<input $readonly id=\"$a->id\" $name $checked $type value=\"$aid\" />";
+                $type = ' type="checkbox" ';
+                $name   = "name=\"{$question->name_prefix}{$aid}\"";
+                if (isset($state->responses[$aid])) {
+                    $checked = 'checked="checked"';
+                    $chosen = true;
+                }
+
+?>
+           <!-- Print the control-->
+
+<script type="text/javascript">
+<!--
+
+var chkCnt=0
+
+
+var maxChk=3
+
+function Checks(ins){
+
+if(ins.checked){
+chkCnt=chkCnt+1
+}else{
+chkCnt=chkCnt-1
+}
+
+if (chkCnt>maxChk){
+ins.checked=false
+chkCnt=chkCnt-1
+alert('you may only choose up to '+maxChk+' options')
+}
+}
+//-->
+</script>
+</head>
+
+<?php
+$a->control = "<input $readonly id=\"$a->id\" $name $checked $type onclick=\"Checks(this)\" value=\"$aid\" />";
+
+?>
+
+<?php
+            }
+
+
+if($question->options->single==0)  {
+                $type = ' type="checkbox" ';
+                $name   = "name=\"{$question->name_prefix}{$aid}\"";
+                if (isset($state->responses[$aid])) {
+                    $checked = 'checked="checked"';
+                    $chosen = true;
+                }
+
+$a->control = "<input $readonly id=\"$a->id\" $name $checked $type  value=\"$aid\" />";
+
+}
+
+?>
 
+<?php
+   
             if ($options->correct_responses && $answer->fraction > 0) {
                 $a->class = question_get_feedback_class(1);
             }
@@ -372,12 +514,16 @@
 
     function grade_responses(&$question, &$state, $cmoptions) {
         $state->raw_grade = 0;
-        if($question->options->single) {
+        if($question->options->single==1) {
             $response = reset($state->responses);
             if ($response) {
                 $state->raw_grade = $question->options->answers[$response]->fraction;
             }
-        } else {
+        } 
+
+
+
+	if($question->options->single==0) {
             foreach ($state->responses as $response) {
                 if ($response) {
                     $state->raw_grade += $question->options->answers[$response]->fraction;
@@ -385,6 +531,32 @@
             }
         }
 
+	if($question->options->single==2) {
+            foreach ($state->responses as $response) {
+                if ($response) {
+                    $state->raw_grade += $question->options->answers[$response]->fraction;
+                }
+            }
+        }
+
+	
+	if($question->options->single==3) {
+            foreach ($state->responses as $response) {
+                if ($response) {
+                    $state->raw_grade += $question->options->answers[$response]->fraction;
+                }
+            }
+        }
+
+
+/* else {
+            foreach ($state->responses as $response) {
+                if ($response) {
+                    $state->raw_grade += $question->options->answers[$response]->fraction;
+                }
+            }
+        } */
+
         // Make sure we don't assign negative or too high marks
         $state->raw_grade = min(max((float) $state->raw_grade,
             0.0), 1.0) * $question->maxgrade;
diff -Naur old/quiz.php new/quiz.php
--- old/quiz.php	2012-02-13 15:34:35.000000000 +0530
+++ new/quiz.php	2012-03-05 10:43:04.000000000 +0530
@@ -798,6 +798,8 @@
 $string['significantfigures'] = 'with {$a}';
 $string['significantfiguresformat'] = 'significant figures';
 $string['singleanswer'] = 'Choose one answer.';
+$string['twoanswer'] = 'Choose exactly two answers.';
+$string['threeanswer'] = 'Choose exactly three answers.';
 $string['sortage'] = 'Sort by age';
 $string['sortalpha'] = 'Sort by name';
 $string['sortquestionsbyx'] = 'Sort questions by: {$a}';