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Ex 6.1, 1 - What will be the unit digit of the squares of the numbers

 

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Ex 6.1, 1 What will be the unit digit of the squares of the following numbers? (i) 81We know that Unit digit of square of any number will be the unit digit of its last digit Unit digit of 812 = Unit digit of 12 = Unit digit of 1 = 1 ∴ Unit digit of square of 81 = 1

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Davneet Singh

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.