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Find the HCF of 250,425 and 175 using euclid's division lemma.Also find the LCM by prime factorisation method.?
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Find the HCF of 250,425 and 175 using euclid's division lemma.Also fin...
Finding HCF using Euclid's Division Lemma:

  • Let us begin by dividing the larger number by the smaller number.

  • First, we divide 425 by 250. We get 1 as the quotient and the remainder is 175.

  • Then, we divide 250 by 175. We get 1 as the quotient and the remainder is 75.

  • Finally, we divide 175 by 75. We get 2 as the quotient and the remainder is 25.

  • We stop here because we cannot divide 75 by 25 without getting a remainder of 0.

  • Therefore, the HCF of 250, 425 and 175 is 25.



Finding LCM by Prime Factorisation Method:

  • First, we factorise the given numbers into their prime factors.

  • 250 = 2 x 5 x 5 x 5

  • 425 = 5 x 5 x 17

  • 175 = 5 x 5 x 7

  • Next, we take all the prime factors of the given numbers, and write them down only once.

  • 2 x 5 x 5 x 5 x 7 x 17

  • Finally, we multiply all the prime factors together to get the LCM.

  • LCM = 2 x 5 x 5 x 5 x 7 x 17 = 21,250



Explanation:

  • Euclid's Division Lemma is a method used to find the HCF of two or more numbers.

  • It involves dividing the larger number by the smaller number, and then dividing the smaller number by the remainder of the previous division.

  • This process is repeated until we get a remainder of 0, which means that we have found the HCF.

  • The prime factorisation method is used to find the LCM of two or more numbers.

  • It involves factorising the given numbers into their prime factors, and then taking all the prime factors and writing them down only once.

  • Finally, we multiply all the prime factors together to get the LCM.

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Find the HCF of 250,425 and 175 using euclid's division lemma.Also find the LCM by prime factorisation method.?
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