Question

Find the L.C.M and H.C.F of 2020 and 2021

Answer 1

Answer:

LCM of 2020 is 2

LCM of 2021 is 43

Answer 2

• LCM of 2020 and 2021 = 4082420

• HCF of 2020 and 2021 = 1

Given :

The numbers 2020 and 2021

To find :

LCM and HCF of 2020 and 2021

Solution :

Step 1 of 4 :

Write down the given numbers

The given numbers are 2020 and 2021

Step 2 of 4 :

Prime factorise the given numbers

2020 = 2 × 2 × 5 × 101

2021 = 43 × 47

Step 3 of 4 :

Find LCM of 2020 and 2021

For the given two or more numbers LCM is the least number which is exactly divisible by each of the given numbers

Hence the required LCM

= 2020 × 2021

= 4082420

Step 4 of 4 :

Find HCF of 2020 and 2021

For the given two or more numbers HCF is the greatest number that divides each of the numbers

Hence the required HCF

= 1

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