For how many ordered triples (x, y, z) of nonnegative integers less than 20 are there exactly two distinct elements in the set \left\{i^{x},(1+i)^{y}, z\right\}, where i=\sqrt{-1} ?
Answer Choices
A. 149
B. 205
C. 215
D. 225
E. 235
For how many ordered triples (x, y, z) of nonnegative integers less than 20 are there exactly two distinct elements in the set \left\{i^{x},(1+i)^{y}, z\right\}, where i=\sqrt{-1} ?
Answer Choices
A. 149
B. 205
C. 215
D. 225
E. 235