Question

171, 285 and 399 find the HCF of the following using prime factorisation method​

Answer 1

Step-by-step explanation:

171=3×3×19

285=3×5×19

399=3×7×19

H.C.F=3×19

H.C.F=57

Answer 2

Answer:

HCF = 57

Step-by-step explanation:

3  171          3    285          3   399

3  57          5    95             7   133

19 19           19  19             19  19

    1                   1                     1

171 = 3*3*19

285 = 3*5*19

399 = 3*7*19

Common factors = 3,19

HCF = 3*19 = 57

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