Find the digit such that the three digit integer is a multiple of 9.
How many digits are there such that the six-digit integer is a multiple of 8?
Find the digit such that the five-digit number is divisible by 9.
How many three-digit numbers are not divisible by have digits that sum to and have the first digit equal to the third digit?
How many 5 digit positive integers are multiples of 11, and have digits which sum to 43?