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400 is the smallest multiple of 100 that has 8 as a factor.
I am assuming you mean 8/9ths 4/6ths or 1/3rd if that is the case, 1/3rd is the smallest, followed by 4/6ths and then 8/9ths. First convert to common denominator, which is 9. 8/9 = 8/9 4/6 = 6/9 1/3 = 3/9 Now compare the numerators in the common denominator fractions. The common denominator fraction with the smallest numerator is the smallest. The smallest is 3/9; so 1/3 is the smallest fraction.
8 is not a factor of 54.
The smallest factor is 1.
Numbers that have no common factor like 8 and 9 as 8=23 and 9=32 The two of them are not prime but they have no common factor