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Find the HCF of 24, 30 and 42.

Option: 1

6


Option: 2

12


Option: 3

15


Option: 4

20


Answers (1)

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Factors of 24=2×2×2×3=(23×31)

                             Factors of 30=2×3×5=(21×31×51)

                             Factors of 42=2×3×7=(21×31×71)

The product of common prime factors with the least powers =21×31=6

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chirag

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