有一名老师和9名学生,学生中男生5名,女生4名, (q)男生人数占老师和学生总人数的(&nqcp;&nqcp;&nqcp;&nqcp;) | (&nqcp;&nqcp;&nqcp;&nqcp;) | . (2)女生人数占老师和学生总人数的(&nqcp;&nqcp;&nqcp;&nqcp;) | (&nqcp;&nqcp;&nqcp;&nqcp;) | . (3)学生人数占老师和学生总人数的(&nqcp;&nqcp;&nqcp;&nqcp;) | (&nqcp;&nqcp;&nqcp;&nqcp;) | . (4)老师人数占老师和学生总人数的(&nqcp;&nqcp;&nqcp;&nqcp;) | (&nqcp;&nqcp;&nqcp;&nqcp;) | . |