If the number 52,1n9, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following? Choose one:  A) 6  B) 5  C) 3  D) 1  E) 0
Maybe you are misreading the question but it is saying that 52,1n9 is a multiple of 3 and not necessarily n is a multiple of 3.   The sum of the digits 5 + 2 + 1 + n + 9 must be a multiple of 3   17 + n must be a multiple of 3   substituting the numbers n must = 1   ANSWER:1
<result>D</result>
If the number 52,1n9, where n represents the tens digit, is a multiple of 3, then the value of n could be which of the following?