find the number of digits in the square root of 81 without calculating them
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9*9 = 81 , its mental maths
sukulhanda01p3go2g:
the number of digits is always 1/2 of original number , if for example we take number 314721 , it has 6 digits , therefore its root will have 3 digits which is 561
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Naphathelene acetic acid
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