1260
630,2
315,2,2
105,3,2,2
35,3,3,2,2
7,5,3,3,2,2
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
90. how did you get 90?
83 is prime. No tree.
HCF(30, 36, 42) = 6 LCM(30, 36, 42) = 1260
61 is already prime. It doesn't need a tree.
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
1260 630,2 315,2,2 105,3,2,2 35,3,3,2,2 7,5,3,3,2,2
1260 2, 630 2, 2, 315 2, 2, 5, 63 2, 2, 5, 7, 9 2, 2, 5, 7, 3, 3
It is: 60
The GCF is 252.
90. how did you get 90?
assuming -1 is a valid factor then the others are 2,2,7,9
factor tree of 216
IT IS PRIME there is no factor tree
Factor tree of 204