1.2.3.4.6.) 12 according to the rule, what number should the brackets be

1.2.3.4.6.) 12 according to the rule, what number should the brackets be


1+3=4 2+4=6 4+8=12
So it's 8



Fill in the brackets with the appropriate number. (1) () 5 / 8 = 8 () (2) () 0.63: () = (): 10
Fill in the brackets with the appropriate number
(1) 5 out of 8 ()
(2)() 0.63:()=():10


(1) 5 out of 40 = 1 out of 8
(2) 0.63:(6.3)=(1):10