Math Problem Statement
is anb a subset of c if a = {n e N: 2|n} and b = {n e N: 3|n} and c= {n e N: 6|n}
Solution
Let's define the sets step by step:
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Set A: — this means that consists of all natural numbers divisible by 2, i.e., .
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Set B: — this means that consists of all natural numbers divisible by 3, i.e., .
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Set C: — this means that consists of all natural numbers divisible by 6, i.e., .
Now, we need to find , which is the intersection of and . This intersection will include all elements that are divisible by both 2 and 3.
Since the least common multiple (LCM) of 2 and 3 is 6, will consist of all natural numbers divisible by 6:
Finally, we check whether is a subset of . Since consists of all multiples of 6, and is exactly the same set, it follows that:
Therefore, yes, is a subset of .
Do you want more details or have any questions?
Here are 5 related questions:
- What is the union of sets and in this case?
- How do we find the least common multiple (LCM) of two numbers?
- Can the intersection of two sets ever be larger than one of the original sets?
- What is the greatest common divisor (GCD) of 2 and 3, and how is it different from the LCM?
- How would the answer change if was ?
Tip: When finding intersections of sets defined by divisibility, look for the least common multiple of the divisors involved!
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Math Problem Analysis
Mathematical Concepts
Set Theory
Divisibility
Intersection of Sets
Subsets
Formulas
A ∩ B = {n ∈ N : LCM(2, 3)|n}
A ∩ B ⊆ C
Theorems
Intersection of sets
Least common multiple (LCM)
Subsets theorem
Suitable Grade Level
Grades 9-12