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Last Digit II (Posted on 2014-03-14) Difficulty: 2 of 5
Can the last digit in the base ten expansion of X2X be 4, whenever X is a positive integer?

If so, give an example. If not, prove it.

See The Solution Submitted by K Sengupta    
Rating: 5.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some Thoughtsre: AnswerK Sengupta2022-09-02 22:31:07
SolutionAnswerMath Man2014-03-19 21:04:12
SolutionSolutiontomarken2014-03-14 10:01:09
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