Question
What are the missing digits? 
  1. N
  2. P
  7 N 0 7
-    2 6 P
  7 4 4 3 


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 digits? 
  1. N
  2. P
  7 N 0 7
-    2 6 P
  7 4 4 3