Current location - Training Enrollment Network - Mathematics courses - Senior one mathematics) ○ +□ = 13, □ +△ = 12, ○ +△ =1. ○ = (), □ = (), △ = (), are there any rules for this kind of problems?
Senior one mathematics) ○ +□ = 13, □ +△ = 12, ○ +△ =1. ○ = (), □ = (), △ = (), are there any rules for this kind of problems?
Yes
2 X(○+□+△) =○+□+□+△+○+△= 13+ 12+ 1 1 = 36
So ○+□+△= 16
In this way, the number represented by each graph can be calculated.
Generally speaking, the law is to sum first and then subtract.