Math Sat Ii C Tough Question

system
Sun, 02 Oct 2005 14:51:49 +0000

you divide by 4 because the shells could be rotated 4 times around the bracelet into different positions. for example, shell 1 would go to shell2’s place, and so on. shell 1 could then move to shell3’s place, and so on. this could happen a total of 4 times. the order remains the same, just the place on the bracelet has moved. so you divide by 4 (and then by 2 for the reason i listed above)