Question 1:
1332
6x222
2x3 2x111
3x37
Answer: 2x3^2x37
Question 2:
240, 120x2, 60x2, 30x2, 15x2, 5x3 Prime Factorization= 2^4x3x5
840, 420x2, 210x2, 105x2, 21x5, 7x3 Prime Factorization= 2^3x3x5x7
GCD: 4
LCM: 1680
Question 3:
133 and 103 are both prime numbers. I added the factors together to see if anything can go into them, and then checked by regular division.
Question 4:
2= 1
3= 1
5= 0
13= 9
I did not feel like using the prime factorization for this method so i am not going to lie, I just did regular divison with some help from my calculator.
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