Circle A only: 9, 27, 45, 63, 81, 99, 117
Circle B only: No numbers
Circle C only: 21, 42, 84, 105
Circles A and B intersect: 18, 36, 54, 72, 90, 108
Circles B and C intersect: No numbers.
Circles A and C intersect: 63
Circles A, B and C intersect: 126
Don't bother. Since 36 is a multiple of 18, it is automatically the LCM.
Since 18 is a factor of 54, put the factors of 18 (except for 18) in the left circle, the factors of 54 (except for 18) in the right circle, and put 18 in the center where they intersect.
It is: 18
It is: 144
It is 126
If you mean a Venn diagram, put 8 and 24 in the left circle, 9, 18 and 36 in the right circle, and 1, 2, 3, 4, 6, 12 in the space where they intersect.
The LCM is 18.
Put 4, 8, 16 and 32 in the left circle. Put 3, 6, 9, 18, 27 and 54 in the right circle. Put 1 and 2 in the space where they intersect.
LCM of 2 6 and 18 is 18.
The LCM of 18 and 6 is 18. The LCM of 18 and 6v is 18v.
LCM of 18 and 84 is 252.
The LCM of 18 and 20 is 180 Using factorisation method: 18 = 2 x 3² 20 = 2² x 5 lcm = 2² x 3² x 5 = 180