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Posted: **Thu Jul 14, 2022 3:55 pm**

: A Positive Integer N Is Divisible By 8 If And Only If The Three Digit Integer Formed By The Last Three Digits Of N Is Di 1 (46.37 KiB) Viewed 37 times

A positive integer n is divisible by 8 if and only if the three-digit integer formed by the last three digits of n is divisible by 8. Using this fact, determine how many pairs of digits (a,b) there are such that the six-digit number 22 b4a6 is divisible by 72.