MathDB

2

Part of 2015 Hanoi Open Mathematics Competitions

Problems(1)

last digit of 2017^{2017} - 2013^{2015} (HOMC 2015 J Q2)

Source:

8/6/2019
The last digit of number 20172017āˆ’201320152017^{2017} - 2013^{2015} is
(A): 22, (B): 44, (C): 66, (D): 88, (E): None of the above.
number theoryDigit