well for part i you wouldve gotten root (n+1) - root (n)
so if you wrote out your first few terms youd get something like
root2 -root1 + root3 - root2 + root4-root3 .........root98 -root 97 + root 99-root 98 +root 100 - root99
so all numbers except for -root1 and root 100 would get...