The digits 1, 2, 5, 6, and 9 are all used to form five-digit even numbers in which no digit is repeated. What is the difference between the largest and smallest of these numbers?

1, 2, 5, 6, 9 - The largest 5-digit EVEN number =96512. The smallest 5-digit EVEN number =12596.

96512 - 12596 =83916 - The difference between the largest and the smallest EVEN numbers.