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4
Units Digit
Units Digit
Source:
June 27, 2011
Problem Statement
Which of the following could not be the unit's digit [one's digit] of the square of a whole number?
(A)
1
(B)
4
(C)
5
(D)
6
(E)
8
\text{(A)}\ 1\qquad\text{(B)}\ 4\qquad\text{(C)}\ 5\qquad\text{(D)}\ 6\qquad\text{(E)}\ 8
(A)
1
(B)
4
(C)
5
(D)
6
(E)
8
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