Question

find out the smallest nu.by which following nu.must be divided to get the perfect cube

Answer 1

Answer:

To get perfect cube,

81 must be devided by 3.

128 must be devided by 2.

135 must be devided by 5

Answer 2

Answer:

your answer is in the attachment

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Step-by-step explanation:

(i)prime Factor 2 are not in group of triples.Therefore, 108 is not prefect cube . in the above factorization of 108 2 occurs twice. So, if we divide 108 by2*2 then 2 will not occur in prime factor of quotient. Thus, 4 is the smallest natural number by which 108 must be divided for prefect cube number

Hence the resultant prefect cube =

$108 \div 4 = 27 = {3}^{3}$