Number Theory
Greatest Common Divisor / Lowest Common Multiple
If the lowest common multiple of and is what is the third smallest possible integer
Note: Third smallest means the third value of if the possible values were listed from least to greatest.
What is the largest 3-digit number that is a multiple of 12 and a multiple of 21, but not a multiple of 22?
If the greatest common divisor of and is what is the sum of the smallest and largest possible 2-digit positive integers
and are positive integers such that How many such 's are there?
What is the lowest common multiple of the numbers 8, 9, 10, and 12?