7070 /www/nrich/html/content/id/7070/ 1 0000-00-00T00:00:00 <mdoxml version="1.0"> <br /> <ul id="buttonBar"> <li> <a href="https://nrich.maths.org/discus/messages/27/27.html?1274115048"> Ask NRICH</a> </li> </ul> <div> <br /> Checklist -- Five links created; askNRICH thread made, Complete solution included in the Canonical Solution box; Ensure teachers notes box is blank and Do Not Submit Solution tag checked; Ensure weekly tag is NOT checked.<br /> <br /> </div> <div class="framework"> <span style="font-style: italic;">Did you know ... ?</span> <br /> <br /> Snippet of information.</div> <br /> </mdoxml> <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0"><br></br> This is the live weekly challenge. Our solution to this weekly challenge will appear sometime next Monday, when the next weekly challenge will appear.<br></br> <br></br> We don't publish user solutions for the weekly challenges in the same way as we do for the main problems on the site, but please do discuss the weekly challenges on the Ask NRICH -- follow the link from the main part of the challenge.<br></br> <br></br> Sometimes fascinating extensions and explorations will arise from the challenges. Why not share your thoughts, questions and findings on the Ask NRICH thread?<br></br> <br></br> We hope that you enjoy the challenges.<br></br> <br></br> If you have any comments please email Steve Hewson at post16.nrich@maths.org.<br></br> <br></br> <br></br> <br></br> <br></br></mdoxml> <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">Simple hints and idea of curriculum level<br></br>  <br></br></mdoxml> <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">Solution written up in advance here<br></br></mdoxml> 2 3 0 0 0 0 1 A weekly challenge: these are shorter problems aimed at Post-16 students or enthusiastic younger students. Collections Weekly Challenge