Answer:
252
Step-by-step explanation:
Here's how I would argue.
Let the three digits be a, b, and c,
Then the number is abc.
Assume a = 2 and b= 3.
Then c cannot be 8, 9, or 0, because they are not prime numbers.
b cannot equal 4 (not prime), so
Assume that b = 5 (prime).
a cannot be 0 or 1 (not prime), but it can equal 2 (prime).
abc = 252
Thus, 252 is the smallest integer greater than 237 for which each digit is a prime.
