Not at all.
0.33333... nonterminating = 1/3 rational
0.66666... nonterminating = 2/3 rational
0.1428571428... nonterminating = 1/7 rational
0.55555... nonterminating = 5/9 rational
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No, they are not. Recurring decimals are rational.
All rational numbers can be converted from decimals to fractions as for example 0.75 = 3/4 but irrational numbers can not be converted from decimals to fractions.
Infinitely many. pi is not just an irrational number but a transcendental number. All irrational numbers have infinite decimals that do not go into a recurring pattern.
No because non-repeating decimals may be terminating.But suppose you consider terminating decimals as consisting of repeating 0s. That is, 1/8 = 0.125 = 0.12500....Then all non-repeating decimals are irrational.
Yes, except that all irrational numbers will be non-terminating, non-repeating decimals.