Question
What are the missing numbers?
4125, (a)          , 4145, 4155, (b)          , 4175
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?
4125, (a)          , 4145, 4155, (b)          , 4175