Question
What are the missing digits? 
  1. K
  2. L
  2 K 1 5
-    4 6 L
  2 3 5 2 


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. K
  2. L
  2 K 1 5
-    4 6 L
  2 3 5 2