Question

hcf and lcm 35, 42, 63

Answer 1

Answer:

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Step-by-step explanation:

hcf =7

lcm=630

Answer 2

• HCF of 35 , 42 , 63 = 7

• LCM of 35 , 42 , 63 = 630

Given :

The three numbers 35 , 42 , 63

To find :

HCF and LCM of 35 , 42 , 63

Concept :

HCF :

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

LCM :

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

Solution :

Step 1 of 4 :

Write down the given numbers

Here the given numbers are 35 , 42 , 63

Step 2 of 4 :

Prime factorise the given numbers

35 = 5 × 7

42 = 2 × 3 × 7

63 = 3 × 3 × 7

Step 3 of 4 :

Find HCF of 35 , 42 , 63

We know that for given two or more numbers HCF is the greatest number that divides each of the numbers

Hence HCF of 35 , 42 , 63 = 7

Step 4 of 4 :

Find LCM of 35 , 42 , 63

We know that for given two or more numbers LCM is the least number which is exactly divisible by each of the given numbers

LCM of 35 , 42 , 63

= 2 × 3 × 3 × 5 × 7

= 630

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