2 votes 2 votes Which of the following are true? s1: A stack can be implemented by two queue. s2: A queue can be implemented by two stack. mystylecse asked Jan 23, 2018 mystylecse 235 views answer comment Share Follow See 1 comment See all 1 1 comment reply Ashwin Kulkarni commented Jan 23, 2018 reply Follow Share Both are true. 2 votes 2 votes Please log in or register to add a comment.