VJesus12 wrote:Which of the following cannot be the square of an integer
A. 275625
B. 385641
C. 227529
D. 261121
E. 426408
1² =
1.
2² =
4.
3² =
9.
4² = 1
6.
5² = 2
5.
6² = 3
6.
7² = 4
9.
8² = 6
4.
9² = 8
1.
10² = 10
0.
The units digit for a perfect square must be one of the blue values above:
0, 1, 4, 5, 6, 9.
Since a perfect square cannot have a units digit of 8, option
E cannot be a perfect square.
The correct answer is
E.
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