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प्रश्न
What will be the units digit of the square of the following number?
55555
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उत्तर
The units digit is affected only by the last digit of the number. Hence, , we only need to examine the square of its last digit.
Its last digit is 5. Hence, the units digit is the last digit of 25 (25 = 52), which is 5.
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संबंधित प्रश्न
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