the least number by which 8640 must be divided to make it a perfect cube is
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by prime factorisation
theprime factors are -2*2*2*2*2*2*5*3*3*3
as we can see that the prime factor 5*5 and 3*3 are remained ungrouped into triples .so ,it must be divided by 5 and3 to make it perfect cube....
theprime factors are -2*2*2*2*2*2*5*3*3*3
as we can see that the prime factor 5*5 and 3*3 are remained ungrouped into triples .so ,it must be divided by 5 and3 to make it perfect cube....
manjeet3812:
i hope u can understand
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