Common multiples of 100 and 2 include any multiple of 100.
28, 56
1 and 2
LCM(1, 2, 3, ... , 100) = 26*34*52*72*11*13*17*19*23*29*31*37*41*43*47*53*59*61*67*71*73*79*83*89*97 = 7284218307581900599279651679808748132800. All common multiples are multiples of this number.
10 is two in multiples of 2 to 100
the multiples of 2 are 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90,92,94,96,98,100
Use the methods you probably already learned, to find the least common multiple of 2 and 3. Then multiply this least common multiple by 1, by 2, by 3, etc., to get additional multiples.
112, 126, 140 and so on.
22, 44, 66, and 88.
They have to be multiples of 15 so all of them will be multiples of 3. They all have to be even so you are left with 30, 60, 90
Multiples of 2 include every even number. For them to be common, they need to be compared to another set of multiples.
The multiples of 2 are all the positive even numbers. For them to be common, they need to be compared to another set of multiples.