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1. |
If xy + z = 1, yx + z = 1024 and zx + y = 729 (x, y and z are natural numbers), then what is the value of (z + 1)y + x + 1 ? |
A. | 6561 |
B. | 10000 |
C. | 4096 |
D. | 14641 |
Answer» C. 4096 | |