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Finding HCF Using Common Factors

Find the HCF ...

Question

Find the HCF of 8, 9 and 10.

A

1

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B

2

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C

3

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D

5

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Solution

The correct option is A 1
Factors of 8: 1, 2, 4 and 8
Factors of 9: 1, 3 and 9
Facotrs of 10: 1, 2, 5 and 10

The HCF is 1.

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Find HCF and LCM for $8, 9$ and $25$

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Q. Question 3 (iii)
Find the LCM and HCF of 8, 9 and 25 by applying the prime factorization method.

Q. Find the LCM and HCF of the following integers by applying the prime factorisation method:
(i) 12, 15 and 21 (ii) 17, 23 and 29 (iii) 8, 9 and 25
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Q. Find the LCM and HCF of the following integers by applying the prime factorisation method:
(i) 12, 15 and 21
(ii) 17, 23 and 29
(iii) 8, 9 and 25
(iv) 40, 36 and 126
(v) 84, 90 and 120
(vi) 24, 15 and 36

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Finding HCF Using Common Factors

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