{TESTED AND WORKED IN TFS 0.3.7 SVN. REPORT HERE IF YOU FOUND BUGS}<?xml version = "1.0" encoding = "UTF-8"?>
   <mod name = "Pop quiz" version = "1.0" author = "Teckman" MODIFIED = "Slave Ots"  enabled = "yes">
       <config name = "config"><![CDATA[
       --[[
       keep the numbers of questions in this para ' and '  so that tfs didn't calculate it
       ]]--
           config = {
               questions = {
                   [1] = {question = "'2' * '2' + '2' / '2' + '5'", answer = '10'},
                   [2] = {question = "'8' / '4' + '8' - '5'", answer = '5'},
                   [3] = {question = "'60' / '30' + '28'", answer = '30'},
                   [4] = {question = "'24' / '6' - '4' + '12'", answer = '12'},
                   [5] = {question = "'6' * '6' + '4'", answer = '40'},        
                   [5] = {question = "'50' / '10' + '20' - '25'", answer = '25'},
                   [6] = {question = "'2' * '2' + '4' * '4'", answer = '20'},        
                   [7] = {question = "'9' * '9' + '19'", answer = '100'},                    
                   [8] = {question = "'{8 * 8}' + '6' - '60'", answer = '10'},                
                   [9] = {question = "'5' * '5' + '15'", answer = '40'},                
                   [10] = {question = "'12' * '12' - '44'", answer = '100'},                
                   [11] = {question = "'4' + '2' + '4' + '5' - '10' + '3'", answer = '8'},                
                   [12] = {question = "'10' + '15' + '25' + '50", answer = '100'},                    
                   [13] = {question = "'10' + '20' + '30' + '40' + '50' + '100'", answer = '250'},                    
                   [14] = {question = "'8' + '2' - '5' + '6' + '9'", answer = '20'},                    
                   [15] = {question = "'{50 + 40 - 9}' / '9'", answer = '9'}
               },
               prize = 10 * 10000, -- 10 * crystal coins
               storage = 200, -- empty storage
               time = 30, -- time to end the question if not answer
               answered = 500 -- empty storage to check if question is answered or not
           }
       ]]></config>
       <globalevent name="popquiz" interval="35000" event="script"><![CDATA[
           domodlib("config")
           function onThink(interval)
       for _, v in pairs(config.questions) do
       if not(v.question == getGlobalStorageValue(config.storage)) then
   setGlobalStorageValue(config.answered, 0)
   local random_question = config.questions[math.random(1, table.maxn(config.questions))].question
   local answer = config.questions[math.random(1, table.maxn(config.questions))].answer
   setGlobalStorageValue(cid, config.storage, random_question)
doBroadcastMessage("[MATH QUIZ]: the question is "..random_question.." = ???!\n-- to answer the question type '/quiz ANSWER'.\nif no one send a correct answer in " .. config.time .. " seconds. the quiz will ended. ", MESSAGE_STATUS_CONSOLE_ORANGE)
addEvent(function()
   if getGlobalStorageValue(config.answered) == 0 then
       setGlobalStorageValue(config.answered, 1)
doBroadcastMessage("[MATH QUIZ]: the quiz have been ended. no one answered a correct answe.", MESSAGE_STATUS_CONSOLE_ORANGE)
   return true
   end
   return true
   end, config.time*1000) 
               return true
           end
           end
           return true
           end
       ]]></globalevent>
       <talkaction words = "/quiz" event = "script"><![CDATA[
           domodlib("config")
       function onSay(cid, words, param)
               if(param) then
                   if(getGlobalStorageValue(config.storage)) or (not(getGlobalStorageValue(config.answered)) == 0) then
                       for _, v in pairs(config.questions) do
                           if(v.question == getGlobalStorageValue(config.storage)) then
                               if(string.lower(param) == v.answer) then
                                   doBroadcastMessage("[MATH QUIZ]: " .. getPlayerName(cid) .. " has answered the MATH question. Congratulations to the winner!", MESSAGE_STATUS_CONSOLE_ORANGE)
                                   setGlobalStorageValue(config.answered, 1)
                                   doPlayerAddMoney(cid, type(config.prize) == "table" and math.random(config.prize[1], config.prize[2]) or config.prize)
                                   setGlobalStorageValue(config.storage, nil)
                                   doSendMagicEffect(getPlayerPosition(cid), 27)
                                   return true
                                   else
                                   doPlayerSendCancel(cid, "This answer is wrong.")
                                   doSendMagicEffect(getPlayerPosition(cid), CONST_ME_POFF)
                                   return true
                               end

                           end
                       end
                   else
                       doPlayerSendCancel(cid, "The MATH quiz has already ended.")
                       doSendMagicEffect(getPlayerPosition(cid), CONST_ME_POFF)
                       return true
                   end
               else
                   doPlayerSendCancel(cid, "The answer must be stated in parameter.")
                   doSendMagicEffect(getPlayerPosition(cid), CONST_ME_POFF)
                   return true
               end
               return TRUE
           end
       ]]></talkaction>
   </mod>]