Trial & Error
... that YouTube channel Trial & Error's manner of selling live-show tickets—HK$10,000 on day one, $5,000 on day two, all the way to $10 on day 24—appeared on a university entrance exam?
... that YouTube channel <b id="mwAj0"><a href="./Trial_&amp;_Error_(company)" id="mwAj4" rel="mw:WikiLink" title="Trial &amp; Error (company)">Trial &amp; Error</a></b><span about="#mwt52" class="nowrap" data-mw='{"parts":[{"template":{"target":{"wt":"`s","href":"./Template:`s"},"params":{},"i":0}}]}' id="mwAj8" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> manner of selling live-show tickets—<a href="./Hong_Kong_dollar" id="mwAkA" rel="mw:WikiLink" title="Hong Kong dollar">HK$</a>10,000 on day<span id="mwAkE" typeof="mw:Entity"> </span>one, $5,000 on day<span id="mwAkI" typeof="mw:Entity"> </span>two, all the way to $10 on day<span id="mwAkM" typeof="mw:Entity"> </span>24—appeared on <a href="./Hong_Kong_Diploma_of_Secondary_Education" id="mwAkQ" rel="mw:WikiLink" title="Hong Kong Diploma of Secondary Education">a university entrance exam</a>?