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Is pi over pi irrational?

Published in Rational Numbers 2 mins read

No, pi over pi is not irrational; it is rational.

The question touches upon a common point of confusion regarding irrational numbers and rational numbers. Let's break it down:

Understanding Rational vs. Irrational Numbers

Feature Rational Number Irrational Number
Definition A number that can be expressed in the form a/b, where a and b are integers and b is not zero. A number that cannot be expressed in the form a/b, where a and b are integers and b is not zero.
Decimal Form Terminates (e.g., 0.25) or repeats (e.g., 0.333...) Neither terminates nor repeats (e.g., π = 3.14159...)
Examples 1, -5, 0.5 (1/2), 0.75 (3/4), 0.333... (1/3) π (pi), √2 (square root of 2), e (Euler's number)

Evaluating π/π

Pi (π) is an irrational number. However, when we divide pi by itself (π/π), we get 1.

  • π/π = 1

The number 1 can be expressed as a fraction where both the numerator and the denominator are integers (e.g., 1/1, 2/2, 3/3).

  • Examples: 1 = 1/1 = 2/2 = 3/3.

Therefore, 1 fits the definition of a rational number.

Reference Information

As stated in the provided context: "On the one hand, since Pi is irrational itself, Pi/Pi doesn't fit the definition of a rational number... However, Pi/Pi is equivalent to 1, which is certainly rational."

Conclusion

Even though pi is irrational, pi divided by pi equals 1, making the result rational.

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