Just a random math exercise - 6/16/2025 (the hard one)

学习资源/Learning Resources 小学/Elementary Schooler
1

When 1999^{2000} is divided by 5, the remainder is

  • A: 4
  • B: 3
  • C: 2
  • D: 1
  • E: 0
0 voters
2

D: 1 is the correct answer; and in case you’ve got the right answer, can you try to find out the remainder of 1998^{1999} divided by 5 too? And how about 2025^{2026} ? :smiley:

3
  1. 2
  2. 0
4

this is very, very :100: