3 ms·
You can also use the last digit of each number. x^N will always end with a '6', y^N with a '1' and z^N with a '5' for N>=1 so ut can't work
by koopajah 14y ago
You can also use the last digit of each number. x^N will always end with a '6', y^N with a '1' and z^N with a '5' for N>=1 so ut can't work
- twiceaday 14y agoThis is equivalent to looking at the equation modulo 10.