Which one of the following is an example of a repeating decimal? A.0.123321 B.1.234545 C.6.787878 D. 0.6666666
A repeating decimal is an irrational number in which one number is repeated infinitely and can only be exactly expressed when transformed to a rational number. A rational number is a fraction or a ratio of two numbers. In this case, the answer is D. 0.6666666 that is equal to 2/3