Question

Find the HCF of the following number Prime factorisation of the following numbers 18 54 and 81

Answer 1

Step-by-step explanation:

Numbers : 18,54,81

factors (18)=2*3*3

factors (54):2*3*3*3

factors (81):3*3*3*3

we know that 3*3 is common in all three .

therefore hcf of numbers =3*3=9

Answer 2

Answer:

HCF=9

Step-by-step explanation:

by prime factorisation,

18=2*3*3

54=2×3×3×3.

81=3*3*3*3

HCF=3*3=9

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