Problems(2)
1 to 2008 have the sum of their digits divisible by 5 (HOMC 2008 J Q1)
Source:
7/25/2019
How many integers from to have the sum of their digits divisible by ?
number theorydivisiblesum of digits
How many integers are in (b,2008b], where b > 0 given (HOMC 2008 Q1)
Source:
7/25/2019
How many integers are there in , where () is given.
Integersnumber theoryalgebra