Hi all,

First time poster here. In the last problem of the exponents and roots practice: (Exponents and Roots Practice - GregMat). I understand the strategy and writing out the pattern. What I don’t understand is how Greg determines that the 7^240 will match the 4th position in the pattern (0), and 241 will then match the 5th position(0)? I had thought that 241 would match, the 11th position in the pattern (4)?

Thank you!