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Not all fractions can be written exactly as a decimal. 1/3, for example, which is approximately 0.333 ...... actually extends to any number of digits one may wish to write and is still not mathematically exact.

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Not all, as some numbers, which are known as "Irrational Numbers" cannot be written in the form, p/q where q doesn't = 0.

Examples are: √2 √3 √5 as they are never ending(non terminating) and non repeating.

Also pi is a irrational which is 22/7 only by approximation, its actual value is not just 3.14 but it is 3.14159265....

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Q: Can all decimals be written as a fraction?
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