1.

Find hcf by division method of 144,180,192​

Answer»

Answer:

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Step-by-step explanation:

Using the factor TREE for the prime factorization of 144,180 and 192, we have

144=2

4

×3

2

,180=2

2

×3

2

×5 and 192=2

6

×3

To find the HCF, we list the common prime factor and their smallest exponents in 144,180 and 192 as follows:

Common prime factor LEAST exponents

2 2

3 1

∴ HCF=2

2

×3

1

=12

To find the LCM, we list all prime factors of 144,180,192 and their greatest exponents as follows:

Prime factors of 144,180 and 192 Greatest exponents

2 6

3 2

5 1

∴ LCM=2

6

×3

2

×5

1

=64×9×5=2880


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