Question
What are the missing numbers?
2999, 3029, (a)         , 3089, (b)         , 3149
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?
2999, 3029, (a)         , 3089, (b)         , 3149