How to find the unit digit of the squares
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The unit digit of a perfect square can be only 0, 1, 4, 5, 6 or 9. The square of a number having: 1 or 9 at the units place ends in1. 2 or 8 at the units place ends in 4. 3 or 7 at the units place ends in 9.
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The unit digit of a perfect square can be only 0, 1, 4, 5, 6 or 9. The square of a number having: 1 or 9 at the units place ends in1. 2 or 8 at the units place ends in 4. 3 or 7 at the units place ends in 9.
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