Tính A=1.2004+2.2003+3.2002+...+2004.1
1.2+2.3+3.4+...+2004.2005
Em làm 3 ngày rồi không ra đấy
Edited by Phạm Quang Toàn, 02-11-2011 - 16:19.
Edited by Phạm Quang Toàn, 02-11-2011 - 16:19.
Edited by perfectstrong, 30-10-2011 - 21:56.
Edited by perfectstrong, 30-10-2011 - 21:57.
Edited by reddevil123, 03-11-2011 - 12:28.
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