sentence 1: How do I build my profile for top B-schools?
 sentence 2: How do I build my profile for Harvard, Wharton, INSEAD etc.? sentence 1: How do you know whether someone likes you back?
 sentence 2: How do you know if someone likes you? sentence 1: How did ISIS form? When and where did ISIS begin?
 sentence 2: What are ISIL's or ISIS' motives and goals? How are they accomplishing them?
same meaning
not same meaning
not same meaning