Multiple choice general knowledge math & puzzles How many integral solutions (x,y) does the equation x^y = xy have? 1 2 3 4 More than 4 Reveal answer Fill a bubble to check yourself E Correct answer Explanation The equation x^y = xy has several integral solutions including (1,1), (2,2), (1,0) is undefined, but also negative integers and specific pairs like (2,4) and (4,2). Because there are more than 4 valid pairs, 'More than 4' is the correct choice.