Which colleges students played in the try out in striker position?
select cname from tryout where ppos = 'striker'
And in which state is it located?
select t1.state from college as t1 join tryout as t2 on t1.cname = t2.cname where t2.ppos = 'striker'
How about it's enrollment number?
select t1.enr from college as t1 join tryout as t2 on t1.cname = t2.cname where t2.ppos = 'striker'