2 votes 2 votes Mathematical logic I found difficulty of this type question please help me Mathematical Logic discrete-mathematics mathematical-logic + – Lakshman Bhaiya asked Nov 14, 2017 Lakshman Bhaiya 204 views answer comment Share Follow See 1 comment See all 1 1 comment reply Anjan commented Nov 14, 2017 reply Follow Share option B. x is parent of both y and v y and v are different y is parent of w. 1 votes 1 votes Please log in or register to add a comment.