Q: Is 3.45 a rational or irrational number?

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Any repeating decimal digits (this includes repetition after a certain point, e.g. 2.4510101010...) is a rational number.

It is a rational number.

If an irrational number is added to, (or multiplied by) a rational number, the result will always be an irrational number.

When a rational numbers is divided by an irrational number, the answer is irrational for every non-zero rational number.

Can be irrational or rational.1 [rational] * sqrt(2) [irrational] = sqrt(2) [irrational]0 [rational] * sqrt(2) [irrational] = 0 [rational]

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Well honey, that number is as rational as a cat wearing a top hat. Any number that can be expressed as a fraction is considered rational, and since 0.345 345 345 can be written as 383/111, it falls into the rational category. So, there you have it, a rational number strutting its stuff.

Any repeating decimal digits (this includes repetition after a certain point, e.g. 2.4510101010...) is a rational number.

10.01 is a rational number

Rational

It is a rational number.

is 34.54 and irrational or rational. number

it is a rational number but 4.121314..... is an irrational no

Irrational.

Such a product is always irrational - unless the rational number happens to be zero.

The product of a rational and irrational number can be rational if the rational is 0. Otherwise it is always irrational.

No number is irrational and rational.

If an irrational number is added to, (or multiplied by) a rational number, the result will always be an irrational number.