Answer:
The sets A and B are defined as follows:
A = x ∈ N, x ≤ 20
B = x ∈ N, x ≤ 15
To understand these sets, let's break down their definitions:
1. Set A:
- It consists of elements of the form 3x, where x is a natural number (N) and x is less than or equal to 20.
- The notation "x ∈ N" means that x belongs to the set of natural numbers.
- Therefore, A includes all multiples of 3 that are less than or equal to 60 (since 3 * 20 = 60).
2. Set B:
- It consists of elements of the form 4x, where x is a natural number (N) and x is less than or equal to 15.
- Similar to set A, B includes all multiples of 4 that are less than or equal to 60 (since 4 * 15 = 60).
In summary, set A contains all multiples of 3 that are less than or equal to 60, while set B contains all multiples of 4 that are less than or equal to 60.
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Explanation: