–1 votes –1 votes Tried solving 68. used infix to prefix but result wasn't any of the options. Can somebody help me please Srishti Raj asked Sep 17, 2016 Srishti Raj 486 views answer comment Share Follow See 1 comment See all 1 1 comment reply $ourav commented Sep 18, 2016 reply Follow Share The image is not visible, perhaps not uploaded properly. Please upload it once again or rather just type it. 0 votes 0 votes Please log in or register to add a comment.