Question
What are the missing numbers?
5509, (a)          , 5589, 5629, (b)          , 5709
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?
5509, (a)          , 5589, 5629, (b)          , 5709