My book is different . . . . . . . . yours.

Solution (By Examveda Team)

There are three common prepositions or conjunctions used with 'different': from, than, and to. 'Than' is used in comparisons as a conjunction (as in "she is younger than I am") and as a preposition ("he is taller than me"). 'From' is the correct answer as we need to use a preposition after 'different'.