I have main domain and it has 29 sub-domain all the keyword is same. My main domain doing well at google SERP. I submit other 29 sub-domain name in google directory. Now my question is when anyone search with the keyword are all sub-domain show in one after another or with a good SERP?
agree with @Rapid_SEO! but its also depend on the number of back links if your subdomain is more optimized then your home page with same keywords then your subdomain appear in search engine before home page. totally backlinks game