Q:

# What are the three forms of logic?

A:

The three forms of logic are deductive, inductive and abductive reasoning. Deductive logic is the reasoning behind mathematics; it begins with a true and asserted general rule and then proceeds to a specific application or conclusion. Inductive reasoning begins with a specific observation that is limited in its scope and then proceeds to a larger general conclusion, and abductive reasoning begins with partial set of observations and attempts to formulate what may be the most likely explanation.

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Deductive reasoning is the most obvious and trusted form of logic. An example of deductive reasoning is the following: If X equals 7 and if Y equals 3, then 3 times X plus Y equals 24. The reasoning proceeds from a given and true premise, in this case, X equals 7 and Y equals 3, and then leads to a conclusion that must be true as a result of logical necessity.

In a nonmathematical setting, an example of deductive logic is the following progression from a major premise, to a minor premise and then to a final conclusion: All humans breath oxygen, John is a human and John, therefore, breathes oxygen. This form of deductive reasoning is also known as a syllogism.

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