divisible by 8 or at least one of its digits is 8 (HOMC 2011 Q1)
Source:
July 25, 2019
number theorydivisible
Problem Statement
An integer is called "octal" if it is divisible by or if at least one of its digits is .
How many integers between and are octal?(A): , (B): , (C): , (D): , (E):