Question

7 multiple choice 1 point determine which of the following is a good definition: an even number is divisible by two. a circle never ends. a dog is an animal with four legs. none of the above.

Explanation:

A good definition is precise, necessary, and sufficient. "An even number is divisible by two" is a standard, precise mathematical definition (necessary and sufficient). "A circle never ends" is vague; "A dog is an animal with four legs" is insufficient (other animals have four legs).

Answer:

A. An even number is divisible by two.