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: Why should I learn C++ when I know Java?
 sentence 2: What should I learn C++ or Java? sentence 1: What do you think about the idea of Narendra Modi about 500&1000 notes?
 sentence 2: What do you think about ban on Rs. 500 and Rs. 1000 currency notes?
same meaning
not same meaning
same meaning