How many ways can you go up a 10 step staircase if you have very long legs and make 1, 2, OR 3 step moves?
If you divide 3 to the power of 99 by 7 what is the remainder?
Thanks so much for all your help. I always get stuck on these.
3^9, 3^99, 3^999, 3^9999.......etc mod 7 = 6 as the remainder.
