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Ex 6.1, 2 - Chapter 6 Class 8 Squares and Square Roots - Part 5

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Ex 6.1, 2 The following numbers are obviously not perfect squares. Give reason. (v) 64000 Perfect square ends in 0, 1, 4, 5, 6 or 9. And they can only have even number of zeroes at the end. 64000 has 3 zeroes at the end. Perfect square can have only even number of zeroes at the end. ∴ It is not a perfect square.

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.