sentence 1: How do I know if I'm good?
 sentence 2: How do I know what I'm good at? sentence 1: Has demonetisation backfired Modi?
 sentence 2: Is Modi's demonetisation failing? sentence 1: Why does a mobile 'selfie' produce a mirror image, whereas photographs shot with the primary camera are always true images?
 sentence 2: When we see via the front camera of the phone, we see everything as a mirror image, but when we use the back camera, it is a normal image. Why is it so?
not same meaning
same meaning
not same meaning