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3 years ago

Find the LCM and HCF of 15, 42 and 123

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

7 0

Answer:

LCM - 1

HCF - 3

Step-by-step explanation:

LCM - Lowest Common Factors

HCF - Highest Common Factors

____________________________________________________________

Factors of 15 - 1, 3, 5, 15

Factors of 42 - 1, 2, 3, 6, 7, 14, 21, 42

Factors of 123 - 1, 3, 41, 123

So now we know the factors of 15, 42, 123 what is lowest and highest factor we can find in every number

____________________________________________________________

I have bolded the lowest and highest common factor.

Factors of 15 - 1, 3, 5, 15

Factors of 42 - 1, 2, 3, 6, 7, 14, 21, 42

Factors of 123 - 1, 3, 41, 123

_______________________________________________

LCM - 1

HCF - 3

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Answer:

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Step-by-step explanation:

From the question we are told that

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Generally the standard deviation is mathematically represented as

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Generally $\frac{X - \mu }{ \sigma } = Z (standardized \ value \ of \ X)$

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$P(x_1 < X < x_2 ) = P(z_2 < 0.85) - P(z_1 < -0.55)$

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