https://sites.google.com/site/periczeljkosmederevoenglish/Mathematics/how-many-numbers-in-a-range-1-n-are-divisible-by-any-of-given-test-numbers // p array of primes ... find out how many numbers are divisible by any of those two. Set N {1,2,3,4,5,6,7,8,9,10} , contains range of numbers to be tested. Set A ...