Question

H.C.F & L.C.M 18 & 20​

Answer 1

HCF is 2

LCM is 180

HOPE THIS HELPS YOU DEAR

Answer 2

Answer:

H.C.F is 2 and LCM is 180

Step-by-step explanation:

Steps to find HCF

Find the prime factorization of 18

18 = 2 × 3 × 3

Find the prime factorization of 20

20 = 2 × 2 × 5

To find the hcf, multiply all the prime factors common to both numbers:

Therefore, HCF = 2

Steps to find LCM

Find the prime factorization of 18

18 = 2 × 3 × 3

Find the prime factorization of 20

20 = 2 × 2 × 5

Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 2 × 2 × 3 × 3 × 5

LCM = 180