Max. audit limit


(Guest)
as we know one ca can accept 45 tax audit maximum..

today i read kamal garg book..i read same line with ..."  maximum 30 audit u/s 224/228 can be accepted"
as per my knowledge ca can accept 45 audit...of whoich only 20be companies..subject to limit of public co. having. 25 or more paid up share capital be 10.
please clarify the matter....