MathDB

132

Part of 1970 All Soviet Union Mathematical Olympiad

Problems(1)

ASU 132 All Soviet Union MO 1970 rearranging 17-digit number

Source:

6/24/2019
The digits of the 1717-digit number are rearranged in the reverse order. Prove that at list one digit of the sum of the new and the initial number is even.
number theoryDigits17-digit