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Which of these is an irrational number?

A. π

B. 22/7
​​
C. 0.1666666

D. -1.325689723564

User Wonkyung
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C .0.16666666666

Bécasse it goes on forever
User DazWorrall
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A. π.

An irrational number is a number that cannot be expressed as a fraction p/q for any integers p and q. Irrational numbers have decimal expansions that neither terminate nor become periodic. Every transcendental number is irrational.

User Lstor
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