Two numbers $90$ and $m$ share exactly three positive divisors. What is the greatest of these three common divisors?
Question:
Two numbers $90$ and $m$ share exactly three positive divisors. What is the greatest of these three common divisors?
Answer:
Let's think step by step.

user
9
Two numbers $90$ and $m$ share exactly three positive divisors. What is the greatest of these three common divisors?
train