Expression 2: "l" Subscript, "e" "t" "t" "e" "r" , Baseline left parenthesis, "x" , "n" , right parenthesis equals floor left parenthesis, StartFraction, mod left parenthesis, "x" , 10 Superscript, "n" , Baseline , right parenthesis Over 10 Superscript, left parenthesis, "n" minus 2 , right parenthesis , Baseline , EndFraction , right parenthesisletterx,n=floormodx,10n10n−2
2
Expression 3: "L" to "l" Subscript, "e" "t" "t" "e" "r" , Baseline left parenthesis, "X" , left bracket, 10 , 8 , ...2 , right bracket , right parenthesisL→letterX,10,8,...2
3
Expression 4: "L" equals left bracket, 1 , 2 , 1 , 6 , 20 , right bracketL=1,2,1,6,20