Question

There are many four-digit positive integers in which the product of the digits is equal to $5!$. What is the sum of the largest and smallest such four-digit numbers

Answer 1

7

Explanation:

5! = 1×2×3×4×5

they want 4 numbers that = 120

so

2x3x4x5 = 120

2 + 5 = 7

Answer 2

9889

Explanation: