try this ( use ctrl + shift + enter )

=SUM(IF(MOD(COLUMN(B3:AL3),2)=0,B3:AL3))


On Nov 20, 5:10*pm, Danish Ayub
wrote:
I want to SUM values in alternate colums B3 D3 F3 H3 J3 L3 N3 P3 till AL3
using some formula which automaticaly identifies alternate colums and add the
values.

cannot use " =B3+D3+F3+H3 "