Panikickplant@lemmy.world to Lemmy Shitpost@lemmy.world – 1244 points – 9 months ago144Post a CommentPreviewYou are viewing a single commentView all commentsShow the parent commentI looked up a rule for 7, and it seems like it would take about the same amount of time as actually dividing the number by 7. Meanwhile, it looks like the rule for 8 is to see if the last 3 digits are divisible by 8, which seems like a real time save for big numbers.1 more...
I looked up a rule for 7, and it seems like it would take about the same amount of time as actually dividing the number by 7. Meanwhile, it looks like the rule for 8 is to see if the last 3 digits are divisible by 8, which seems like a real time save for big numbers.1 more...
I looked up a rule for 7, and it seems like it would take about the same amount of time as actually dividing the number by 7.
Meanwhile, it looks like the rule for 8 is to see if the last 3 digits are divisible by 8, which seems like a real time save for big numbers.