Multiple choice If (123)5 = (x3) y, then the number of possible values of x is 4 3 1 2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation (123)5 = (x3)y Converting both sides to decimal: ⇒ 25 + 10 + 3 = xy + 3 ⇒ xy + 3 = 38 ⇒ xy = 35 ⇒ x = 5, y = 7 or , x = 7, y = 5 ∴ Total number of solutions: 2