Q66.
Question
Explain why an open sentence always has at least one variable.
Step-by-Step Solution
Verified Answer
The reason is that an open sentence is a statement that contains at least one unknown quantity and it becomes either true or false.
1Step 1. Definition.
Open sentence: If a statement contains at least one unknown quantity and that becomes either true or false when a quantity is substituted for the unknown, then it is called an open sentence.
2Step 2. What to find?
We have to find the reason why an open sentence always has at least one variable.
3Step 3. Reasoning.
The reason why an open sentence always has at least one variable is: that an open sentence is a statement that contains at least one unknown quantity and it becomes either true or false.
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