Lets find the prime factorization of 22, 165, 35 and 210. Prime factorization of a number is breaking a number down into the set of prime numbers which multiply together to result in the original number.
The prime factorization of the number 22 is:
Similarly, for 165, 35 and 210 we have
Then, we can solve the given questions.
Question 1.
so we can cancel out the number 11 and get
Then, the answer is
Question 2.
and we can cancel out the number 5 and 7, then we obtain
then, the answer is