Answer the following statements true (T) or false (F)

1. If an expression A is true, prefixing it with the ! operator causes the combined expression to become false, as in !A.
2. The && and || logical operators have a higher precedence than the relational operators.
3. The ! operator has a higher precedence than the relational operators (such as < or >).
4. Variables of the double data type are commonly used as flags.
5. The == operator cannot be used to compare string expressions.

1. true
2. false
3. true
4. false
5. false