Question

find the HCF and the LCM of the number:154,198and 286 step by step answers
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Answer 1

Answer:

Prime factorisation of 154 = 2 × 7 × 11

Prime Factorisation of 198 = 2 × 3 × 3 × 11

Prime factorisation of 286 = 2 × 11 × 13

To find HCF

Product of common factors of 154, 198 and 286 = 2 × 11 = 22

HCF (154, 198, 286) = 22

To find LCM

Product of common factors of atleast two numbers = 2 × 11 = 22

Product of other factors = 7 × 3 × 3 × 13 = 819

LCM (154, 198, 286) = Product of common factors × Product of other factors = 22 × 819 = 18,018

LCM (154, 198,286) = 18,018

Answer 2

Answer:

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Step-by-step explanation:

Prime factorisation of 154 = 2 × 7 × 11

Prime Factorisation of 198 = 2 × 3 × 3 × 11

Prime factorisation of 286 = 2 × 11 × 13

To find HCF Product of common factors of 154, 198 and 286

= 2 × 11 = 22 HCF (154, 198, 286)

= 22 To find LCM Product of common factors of atleast two numbers

= 2 × 11 = 22

Product of other factors = 7 × 3 × 3 × 13 = 819

LCM (154, 198, 286)

= Product of common factors × Product of other factors

= 22 × 819 = 18,018 LCM (154, 198,286) = 18,018