HELP ASAP. ILL GIVE BRAINLIEST OR WHATEVER ITS CALLED
Jónsson is learning to write Icelandic, but he writes very slowly. To help him speed up, his teacher would like him to practice writing random 4-letter arrangements. From the 12 letters that he has learned so far, how many different 4-letter arrangements can Jónsson write? He cannot write the same letter twice in each 4-letter sequence.