Question

Find lcm and hcf of 21 and 55 and also verfied the answer

Answer 1

Answer:

LCM = 1155

HCF=1

Step-by-step explanation:

HCF :

21 = 3 × 7

55 = 5 × 11

HCF=1

To verify:

21/1=21

55/1=55

LCM :

21 = 3 × 7

55 = 5 × 11

LCM = 3 × 5 × 7 × 11

LCM = 1155

To verify:

1155/21=55

1155/55=21

or

55 × 21=1155

21 × 55=1155