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12. | Which one of the following can't be the square of natural number ? | |
A. | 32761 | |
B. | 81225 | |
C. | 42437 | |
D. | 20164 | |
Answer: Option C | |
Explanation: | |
The square of a natural number never ends in 7. 42437 is not the square of a natural number. |
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