Q: Is 1.5 a irrational number

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rational

The square root of 15 is an irrational number and it is about 3.873 rounded to three decimal places

It is 15 which is a rational number

The sum of a rational and irrational number must be an irrational number.

rational * irrational = irrational.

Related questions

irrational

15 is a rational number

It is not irrational but it is all of the others.

rational

The square root of 15 is an irrational number and it is about 3.873 rounded to three decimal places

Yes

No, it is not. And it is not irrational either.

No, it is rational.

No because 15 times pi is an irrational number

The square root of 15 is an irrational number

7.5

The square root of 225 is 15, which is NOT an irrational number.