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What is the GCF and LCM for 30, 35, 36, 42?

Answer 1

They do not have a GCF; their LCM is 1260

If you split each number into it's prime factors then 30 = 2 * 3 * 5 35 = 5 * 7 36 = 2 * 2 * 3 * 3 42 = 2 * 3 * 7

To find the Greatest Common factor you multiply together the lowest power of each prime factor common to all the numbers BUT they do not have any common factors as 35 and 42 have a factor of 7 that is not in 30 or 36 To find the Lowest Common Multiple you multiply together the highest power of each prime factor occurring in any of the numbers, so LCM = 2 * 2 * 3 * 3 *5 * 7 = 1260

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Answer 2

Jace Anderson

The GCF (Greatest Common Factor) for 30, 35, 36, and 42 is 1. The LCM (Least Common Multiple) for these numbers is 2,520.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.