Question

Find the HCF and LCM of 28 and 126 prime factor method please

Answer 1

Here is your answer buddy....

Answer 2

HCF and LCM are 14 and 252 respectively.

Step-by-step explanation:

Number are 28 and 126

HCF of 28 and 126

2 | 28     2 | 126

2 | 14      3 |  63

7 |  7      3  |  21

  |  1        7 |  7

                 |  1

$28 = 2 \times 2 \times 7$

$126 = 2 \times 3 \times 3 \times 7$

$HCF = 2 \times 7$

$HCF = 14$

LCM of 28 and 126

2 | 28 , 126

2 | 14 , 63

7 |  7 , 63

3 | 1 , 9

3 | 1, 3

  |  1 ,1

LCM =$2 \times 2 \times 7 \times 3 \times 3 = 252$

Hence HCF and LCM are 14 and 252 respectively.

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