Question: how many times is the co-singer suresh wadkar and the film name is tera dukh mera dukh?
Schema: create table table_11827596_2 (lyricist varchar, co_singer varchar, film_name varchar, PRIMARY KEY (lyricist))
SQL: select count(lyricist) from table_11827596_2 where co_singer = "suresh wadkar" and film_name = "tera dukh mera dukh"