Question
What are the missing digits? 
  1. P
  2. R
  2 P 8 9
-    3 9 R
  2 4 9 6 


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. P
  2. R
  2 P 8 9
-    3 9 R
  2 4 9 6