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CBASE Science Practice Tests & Test Prep by Exam Edge - Free Test


Our free CBASE Science Practice Test was created by experienced educators who designed them to align with the official College Basic Academic Subjects Examination content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

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CBASE Science - Free Test Sample Questions

What is a proposition that is not proved or demonstrated, but is considered to be either self-evident or subject to a necessary decision?





Correct Answer:
an axiom


an axiom, or sometimes referred to as a postulate, is essentially a statement or proposition which is accepted as true without proof. these are fundamental elements in any axiomatic system from which other statements are logically derived. axioms are deemed to be self-evident, intuitively obvious, or are agreed upon by consensus and therefore, do not require proof. this does not mean they are universally true in all contexts, but within the confines of a particular discipline or system, they are held as the foundational truths.

the role of an axiom is critical in forming the basis of logical reasoning and mathematical proofs. for instance, in euclidean geometry, one of the basic axioms is that through any two distinct points, there exists exactly one line. this axiom cannot be proven within the system; it is simply accepted as a starting point for all further reasoning within that geometric framework. similarly, in algebra, the associative property of addition (i.e., (a + b) + c = a + (b + c)) is considered an axiom.

the concept of an axiom is not restricted to mathematics or logic. it extends into various fields such as physics, economics, and philosophy, where foundational assumptions are necessary for building theories. for example, in economics, one might encounter the axiom that consumers always prefer more of a good to less, which underpins much of consumer choice theory.

it’s important to differentiate an axiom from a theory, hypothesis, or law. unlike hypotheses, which are tentative explanations subject to testing and validation, axioms are accepted without experimental verification. theories, on the other hand, are broader explanations of phenomena backed by evidence and can be modified or rejected based on new evidence. laws describe observed phenomena, usually through concise mathematical formulations, but unlike axioms, they are empirical and derived from experimental data.

in summary, an axiom is a fundamental principle accepted on the basis of its perceived self-evidence or necessity within a specific intellectual framework. it is a basic building block used to construct more complex arguments, and its acceptance is crucial to the development of coherent and systematic structures of knowledge.