Question

find the hcf and lcm of 504 and 980 by prime factorisation method

Answer 1

Hi friend,

Given numbers,

504 and 980

504 = 2×2×2×3×3×7

980 = 2×2×5×7×7

HCF (504,980) = 2×2×7 = 28

LCM (504,980) = 2×2×7×2×3×3×5×7 = 17640

Hope it helps.....

Answer 2

Solution :

L.C.M of 504 and 980 by prime factorisation method is

L.C.M of the given nos. ( 504, 980 ) =

→ 2× 2× 7× 2× 3× 3× 5× 7 = 17640.

therefore, L.C.M = 17640.


H.C.F of 504 and 980 by prime factorisation method is

H.C.F of the given nos. ( 504, 980 )

→ 504 = 2×2× 2× 3×3× 7

→ 980 = 2× 2× 5× 7× 7

Therefore, H.C.F = 2× 2× 7
= 28.


hopes it helps ^_^