N2

Part of 2018 Pan-African Shortlist

Problems(1)

2018 PAMO Shortlist: Digits rearranged to form a multiple of $4$

Source: 2018 Pan-African Shortlist - N2

A positive integer is called special if its digits can be arranged to form an integer divisible by

4

. How many of the integers from

1

2018

number theoryDivisibilityDigits