Multiple choice general knowledge What is the largest number you can write out with numbers 1, 2, and 3? 321 4 10,460,353,203 123 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Using the digits 1, 2, and 3 exactly once, we can form 3^21 = 10,460,353,203, which is much larger than 21^3 or 2^31. This uses exponentiation to maximize the value.