Question

find HCF of 54 and 81 ​

Answer 1

Answer:

HCF of 54

54 = 2 × 27 = 2 × 3 × 9 = 2 × 3 × 3 × 3. 81 = 3 × 27 = 3 × 3× 9 = 3 × 3 × 3 × 3. 99 = 11 × 9 = 11 × 3 × 3. Factors common to all three numbers is 3 × 3.

HCF of 81

Factors of 81 are 1,3,9,27,81. Factors of 117 are 1,3,9,13,39,117. Factors of 189 are 1,3,7,9,21,27,63,189. Among these the highest common factor is 9. H.C.F of 81,117,189 is 9

Answer 2

Answer:

the answer is 27.

Step-by-step explanation:

2 54

3 27

3 9

3. 3

1

3 81

3 27

3 9

3 3

1

54=2×3×3×3

81= 3×3×3×3

HCF= 3×3×3= 27....

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