Let the set X = {1, 3, 4, 5}, what is the sum of x1 and x2?
Understand the Problem
The question is asking for the sum of two specific elements, referred to as $x_1$ and $x_2$, from the given set $X = {1, 3, 4, 5}$. However, it does not specify which elements $x_1$ and $x_2$ refer to. A common interpretation is to assume these might be the first two elements of the set (1 and 3), leading to a conclusion of $1 + 3 = 4$.
Answer
$4$
Answer for screen readers
The sum of the two elements $x_1$ and $x_2$ is $4$.
Steps to Solve
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Identify the elements of the set We have the set $X = {1, 3, 4, 5}$.
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Choose the elements to sum It is common to interpret $x_1$ and $x_2$ as the first two elements of the set, which are $1$ (the first element) and $3$ (the second element).
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Calculate the sum Now, we add the two chosen elements: $$ x_1 + x_2 = 1 + 3 $$
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Compute the result The sum we calculated gives us: $$ 1 + 3 = 4 $$
The sum of the two elements $x_1$ and $x_2$ is $4$.
More Information
The interpretation that $x_1$ and $x_2$ are the first two elements of the set is a common approach in such problems where specific indices are not provided.
Tips
- Assuming different elements instead of the first two may lead to a different sum. Ensure clarity in interpreting which elements to use.
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