Question

Find the hcf and lcm of 30,72,432 by using prime factorisation method

Answer 1

Hi,

Write the numbers 30 ,72,432 into

product of prime .

30 = 2 ×3 ×5

72 = 2 × 2 ×2 × 3 × 3

432 = 2 × 2 × 2 × 2 × 3 × 3 ×3

HCF (30,72,432) = 2 × 3 = 6

LCM( 30,72,432) = 2⁴ × 3³×5 = 2160

I hope this helps you.

:)

Answer 2

Hi 

30 = 2 × 3 × 5

72 = 2 ×  2  × 2 × 3 × 3 

432 = 2 × 2 × 2 × 2 × 3 × 3 ×3 
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HCF  = 2 × 3
         = 6

LCM = 2 × 2 × 2 × 2 × 3 × 3 ×3× 5   = 2160