42. Alan’s bag had a three-digit numeric lock. He set the password such that it was a palindrome and hence easy to remember. But he is not able to recall it precisely at the moment. But, he does remember the following with certainty
I. The middle digit was an even prime.
II. The sum of digits was divisible by 7 or 9.
III. The sum of squares of digits was less than 100.
Which of the following digits when entered, might open Alan’s bag ?

1. 626

2. 824

3. 828

4. 248

Correct Answer :

626