A = (139139.133 - 133133.139 ) : (2 + 4 + 6 + ... + 2002)
= (139.1001.133 - 133.1001.139) : (2 + 4 + 6 + ... + 2002)
= 0 : (2 + 4 + 6 + .. + 2002) = 0
A = (139139 . 133 - 133133 . 139) : (2 + 4 + 6 + ... + 2002)
= (139 . 1001 . 133 - 133 . 1001 . 139) : (2 + 4 + ... + 2002)
= 0 : (2 + 4 + ... + 2002)
= 0
A=(139139.133-133133.139):(2+4+6+....+2002)
=(139.1001.133-133.1001.139):(2+4+6+....+2002)
=0:(2+4+6+...+2002)=0
A = [139139 .133 - 133133 .139 ] : [ 2+4+6+....+2002]
A =[139.1001.133-133.1001.139]:[2+4+6+...+2002]
A =[139.1001.133.(1-1)]:[2+4+6+...+2002]
A = 139.1001.133.0 :(2+4+6 +...+2002)
A =0 :(2+4+6+...+2002)
A= 0
Vậy A = 0