7496 /www/nrich/html/content/id/7496/ 1 0000-00-00T00:00:00 <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0"></mdoxml> <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0"><br></br> <a href="/content/id/7496/custom.css"></a><br></br></mdoxml> <?xml version="1.0" encoding="UTF-8"?> <mdoxml version="1.0">sizes of different categories:<br></br> thousandths<br></br> hundredths<br></br> tenths<br></br> 1-3<br></br> 7-10<br></br> 20-50<br></br> 100-500<br></br> 1000-2000<br></br> 5000-10000<br></br> 20000+<br></br></mdoxml> 2 3 0 0 0 0 0 ajk44 Alison's problems under development