Question: what is the greatest common factor of 69 46 and 23?
Answer: The factors of 46 are 46, 23, 2, 1. The common factors of 69 and 46 are 23, 1, intersecting the two sets above. In the intersection factors of 69 ∩ factors of 46 the greatest element is 23. Therefore, the greatest common factor of 69 and 46 is 23.