Question
Find the missing digits. 
1 A B + C B 2 = 2 B 6
(a) A
(b) B
(c) C
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

(c)

Click button first when a symbol is required. X

Find the missing digits. 
1 A B + C B 2 = 2 B 6
(a) A
(b) B
(c) C