Multiple choice technology databases How many sub-routines can be used in a RPG program? 127 194 254 Unlimited Reveal answer Fill a bubble to check yourself C Correct answer Explanation RPG/400 programs can use a maximum of 254 subroutines. This is a built-in limitation of the language. The 'Unlimited' option is incorrect as RPG/400 has specific maximum limits for various program elements including subroutines.