Question
What are the missing numbers?
8317, 8367, (a)         , 8467, (b)         , 8567
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

What are the missing numbers?
8317, 8367, (a)         , 8467, (b)         , 8567