Male applicants, who are between the ages of 161/2 and 19 and have passed high school graduation, can apply at the Intermediate level.[128] Men and women applicants, who have graduated from college (three-year course) and are between the ages of 18 and 28, can apply at the Graduate level entry.[129] Graduates of engineering colleges can apply at the Engineer level if they are between the ages of 18 and 28 years.