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1998 CEMC Gauss (Grade 7) Problems/Problem 2

Revision as of 13:45, 29 January 2021 by Coolmath34 (talk | contribs) (Created page with "== Problem == The number <math>4567</math> is tripled. The ones digit (units digit) in the resulting number is <math>\text{(A)}\ 5 \qquad \text{(B)}\ 6 \qquad \text{(C)}\ 7...")
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Problem

The number $4567$ is tripled. The ones digit (units digit) in the resulting number is

$\text{(A)}\ 5 \qquad \text{(B)}\ 6 \qquad \text{(C)}\ 7 \qquad \text{(D)}\ 3 \qquad \text{(E)}\ 1$

Solution

Multiply: $4567 \cdot 3 = 13701.$ The units digit is the rightmost digit, which is 1.

The answer is $\boxed{E}.$

-edited by coolmath34

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