Question 21
In the cryptarithm, different letters represent different digits. Find the four-digit number DCBA.

The repeated letters represent the same digits; leading digits D and A are nonzero. The layout is DCBA × A = ABDD.
Input: enter the requested whole-number answer without units. Leading zeroes from the paper grid may be omitted.

The repeated letters represent the same digits; leading digits D and A are nonzero. The layout is DCBA × A = ABDD.
Input: enter the requested whole-number answer without units. Leading zeroes from the paper grid may be omitted.