Hey Shruti,
Last year, the cut off rank for general students, in BHU, for the B.com hons course was 1291.
Your brother, scored really well in the BHU UET, and he is sure to get admission with the general rank of 247. As far as getting main campus is concerned, yes, he has a great chance of getting into the main campus too. Hope this helps, thank you for asking question here at careers360.
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