Question 11
a) In the following cryptarithm, all different letters stand for different digits. Find the sum (A + B + C).

b) In the following subtraction, M and N represent different digits. What is the value of M + N?

Self-study input instruction (editorial): enter the two digit sums separated by a semicolon, in the order a;b.
**Editorial input note:** Use no spaces before or after semicolons.

b) In the following subtraction, M and N represent different digits. What is the value of M + N?

Self-study input instruction (editorial): enter the two digit sums separated by a semicolon, in the order a;b.
**Editorial input note:** Use no spaces before or after semicolons.