Question

find the l.c.m by division method 144, 252, and 630
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Answer 1

Answer:

Answer:

The HCF is 18.

Step-by-step explanation:

Given : Number 144, 252, 630.

To find : The HCF of 144, 252, 630 by common division method?

Solution :

Common division method is dividing the number by long division and write the common factor from it.

2| 144 2| 252 2| 630

2| 72 2| 126 3| 315

2| 36 3| 63 3| 15

2| 18 3| 21 5| 5

3| 9 7| 7 | 1

3| 3

1| 1

The prime factors are

144=2\times 2\times2\times 2\times3\times 3144=2×2×2×2×3×3

252=2\times 2\times3\times3\times 7252=2×2×3×3×7

630=2\times 3\times3\times 5630=2×3×3×5

The HCF of 144,252,630 is

HCF(144,252,630)=2\times 3\times3HCF(144,252,630)=2×3×3

HCF(144,252,630)=18HCF(144,252,630)=18