Question
What are the missing numbers?
8650, 8690, (a)         , 8770, (b)         , 8850
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?
8650, 8690, (a)         , 8770, (b)         , 8850