Question
Find the missing digits.
  1. M
  2. N

      5 M 1 5
+    1 2 N 3
      2 6 4 1
2 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

Find the missing digits.
  1. M
  2. N

      5 M 1 5
+    1 2 N 3
      2 6 4 1