Austin tried to remember his friend's house number. He knew that there were three digits: a 5, another 5 and a 7. He could not remember the order. How many different house numbers could it be?
Home » ⭐️ Mathematics » Austin tried to remember his friend's house number. He knew that there were three digits: a 5, another 5 and a 7. He could not remember the order. How many different house numbers could it be? a) 3 b) 6 c) 17 d) 27