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Question
The following real number have decimal expansions as given below. In the following case, decide whether it is rational or not. If it is rational, and of the form p/q what can you say about the prime factors of q?
0.120120012000120000. . .
Solution
0.120120012000120000. . .
It is an irrational number as it is non-terminating and non-repeating.
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