2 votes 2 votes Set Theory & Algebra functions + – Lakshman Bhaiya asked Dec 27, 2017 Lakshman Bhaiya 313 views answer comment Share Follow See all 3 Comments See all 3 3 Comments reply vijay_jr commented Dec 27, 2017 reply Follow Share is it 144? 0 votes 0 votes Lakshman Bhaiya commented Dec 27, 2017 reply Follow Share yes, but how to solve? 0 votes 0 votes vijay_jr commented Dec 27, 2017 reply Follow Share First, calculate $g^{9}(x)$ =x+1+1+...9 times = x+9 and $h^{8}(g(x))$= x+9+9+......8 times = x+72. Now put x=72, you will get 144 0 votes 0 votes Please log in or register to add a comment.