If the number 52,1n7, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following?  Select the correct option.
A) 7  B) 5  C) 2  D) 1  E) 0
The sum of the digits 5 + 2 + 1 + n + 7 must be a multiple of 3   15 + n must be a multiple of 3   substituting the numbers n must = 0   Aswer 0
<result>E</result>
If the number 52,1n7, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following?