Hello, my server is COM01 Steam Boiler
Answer is 54
Detail are below:
let spiral = a, snowflake = b, flask = c, triangle = d, cone = e
from first and last columns we have 3a + 2b = 21. 2a + 3b = 24. So a = 3, b = 6.
from first row we have 2a + 2b + c = 27. So c = 9.
from second column we have 3c + 2d = 51. So d = 12
and finally e = 15.
so ?? = 3 + 15 + 15 + 12 + 9