SOLUTION: The number 4567 is tripled. The ones digit (units digit) in the resulting number is (A) 5 (B) 6 (C) 7 (D) 3 (E) 1

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Question 287189: The number 4567 is tripled. The ones digit (units digit) in the resulting number is
(A) 5 (B) 6 (C) 7 (D) 3 (E) 1
Answer by wasim(2) About Me  (Show Source):
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since in the given number
7 is at one's place when 4567 is tripled means multiplied by 3
and 7*3=21
Therefore, the ones digit will be 1 in the resulting number
Answer (E)