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Zero is the last digit of S (Posted on 2018-06-16) Difficulty: 2 of 5
Let S = a^5 + b^5 + c^5 + d^5, and
a,b,c,d are integers fulfilling a+b+c+d=0
Prove that S must be divisible by 10.

No Solution Yet Submitted by Ady TZIDON    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: AnswerKelsey Johnson2018-06-28 06:06:31
re: AnswerJer2018-06-17 17:10:27
SolutionAnswerMath Man2018-06-16 19:53:51
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