1 votes 1 votes What is the correct way to solve questions of this kind where equations like these are given and you are asked to determine what languages do the variables X1 X2 X3.. represent? Theory of Computation theory-of-computation regular-grammar made-easy-test-series + – smriti bhati asked Jan 26, 2018 • edited Mar 4, 2019 by ajaysoni1924 smriti bhati 316 views answer comment Share Follow See 1 comment See all 1 1 comment reply smriti bhati commented Jan 26, 2018 reply Follow Share https://gateoverflow.in/8159/gate2015-2_35 is a similar question but I couldn't do this question using the same approach. 0 votes 0 votes Please log in or register to add a comment.