Question

81 , 117 , 135 take out the HCF

How to solve this problem in HCF ( by common division method ) ​

Answer 1

Answer:

9

Step-by-step explanation:

81=3*3*3*3

117=3*3*13

135=3*3*3*5

Answer 2

Answer:

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1. Decompose all numbers into prime factors

81 | 3 27 3 9 3 3 3 1

117 | 3 39 3 13 13 1

135 | 3 45 3 15 3 5 5 1

2. Write all numbers as the product of its prime factors

Prime factors of 81 = 3 to the power 4

Prime factors of 117 = 3sq. . 13

Prime factors of 135 = 3cube . 5

3. Choose the common prime factors with the lowest exponent

Common prime factors: 3

Common prime factors with the lowest exponent: 3sq

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 3sq. = 9

Step-by-step explanation:

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