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Q: What is a double variable?
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How many bytes is a double variable?

There are 8 bytes in a double


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In Boolean algebra, the law of double complementation states that a variable is equal to its double complement. This means that applying the complement operation twice to a variable yields the original variable. This law is useful in simplifying Boolean expressions and can help in reducing the complexity of logic circuits.


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In PHP you can use both single quotes ( ' ' ) and double quotes ( ) for strings?

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What code would you use to declare a variable that can store the current in a circuit?

double variable_list;