What could be the possible ‘one’s’ digits of square root of 99856 - Ex 5.3

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Ex 5.3, 1 What could be the possible ‘one’s’ digits of the square root of each of the following numbers? (ii) 99856We know that If a number ends with 6 if square root can end with 4 or 6 ∴ Possible unit digits = 4 or 6 Rough As 4^2 = 16 6^2 = 36 √16 = 4 √36 = 6

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