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प्रश्न
By just examining the unit digit, can you tell which of the following cannot be whole square?
1027
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उत्तर
If the units digit of a number is 2, 3, 7 or 8, the number cannot be a whole square.
1027 has 7 as the unit digit, so it cannot be a perfect square.
संबंधित प्रश्न
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