The question is, “What is the tens digit of 7^241?”

Greg goes over this in one of his recorded lectures, but I’m still a little confused. I can see how there is a repeating pattern of 0,4,4,0,0,4,4… etc. However, I’m not sure how to identify the 241st placement in this pattern. Can someone please lend some assistance?

p.s. It’s my first time posting here, so if this is the wrong spot, I apologize.