The greatest common factor of 630 , 1155 = 105
Yes.
1155 385,3 77,5,3 11,7,5,3 3 x 5 x 7 x 11 = 1155
As a product of its prime factors: 3*5*7*11 = 1155
As a product of its prime factors: 3*5*7*11 = 1155
As a product of its prime factors: 3*5*7*11 = 1155. From the given information its factors can be worked out and that 1 and 1155 are also factors
It is: 165
The GCF is: 165
16.5*2=33
30% of 1155= 30% * 1155= 0.3 * 1155= 346.5
For any two numbers, X and Y, LCM(X, Y) = X*Y/HCF(X, Y) So, LCM(525, 1155) = 525*1155/105 = 5775
1155 is composite.