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Ex 5.1, 1 What will be the unit digit of the squares of the following numbers? (iii) 799Unit digit of 7992 = Unit digit of 92 = Unit digit of 81 = 1 ∴ Unit digit of square of 799 = 1

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo