DATABASE FUNDAMENTALS
HOW TO USE THE CONCATENATE FUNCTION IN EXCEL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -The logical negation symbol ¬ or is one of the statement connectives or operators that can be used to form new compound statements from two or more statements. It simply reverses the truth value of any statement in front of which it appears.
Detailed explanation-2: -(vii) The symbol ‘∉’ stands for ‘does not belongs to’ also for ‘is not an element of’. Therefore, x ∉ A will read as ‘x does not belongs to set A’ or ‘x is not an element of the set A’.
Detailed explanation-3: -The conjunction of the statements P and Q is the statement “P and Q” and its denoted by P∧Q. The statement P∧Q is true only when both P and Q are true. The disjunction of the statements P and Q is the statement “P or Q” and its denoted by P∨Q. The statement P∨Q is true only when at least one of P or Q is true.
Detailed explanation-4: -The symbol “ ∨ “ signifies inclusive disjunction: a ∨ statement is true whenever either (or both) of its component statements is true; it is false only when both of them are false. (See the truth-table at right.)
Detailed explanation-5: -Equal sign with three lines, i.e. ≡ means identical to.