A palindrome is a positive integer which reads the same forward and backwards, like 12321 or 8448. How many 4-digit palindromes are divisible by 7?
(1001, 1771, 2002, 2772, 3003, 3773, 4004, 4774, 5005, 5775, 6006, 6776, 7007, 7777, 8008, 8778, 9009, 9779) >>Total = 18 such numbers