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No, 2/5 is a rational number because it can be expressed as a ratio of two integers. An irrational number cannot be expressed as a fraction.

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Naw bruh

Q: Is 2 5 an irrational number?

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phi = [1+sqrt(5)]/2 sqrt(5) is irrational and so phi is irrational.

4*sqrt(2) Rational multiples of irrational numbers are irrational. sqrt(2) is about 1.414, and 5/4 = 1.25 < 1.414... < 1.75 = 7/4 so 4*sqrt(2) is between 5 and 7, and is irrational.

Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.

5 squared is 5*5 is 25. 25 is not an irrational number.

√ 5 is an irrational number. Any square root of a prime number is irrational.

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5*sqrt(2) is one irrational number. 1/sqrt(2) is another irrational number.Their product is 5!5*sqrt(2) is one irrational number. 1/sqrt(2) is another irrational number.Their product is 5!5*sqrt(2) is one irrational number. 1/sqrt(2) is another irrational number.Their product is 5!5*sqrt(2) is one irrational number. 1/sqrt(2) is another irrational number.Their product is 5!

phi = [1+sqrt(5)]/2 sqrt(5) is irrational and so phi is irrational.

5.4 = 5 2/5 = 27/5 so it is a rational number.

5 isn't a irrational number.

A percent can be represented as a fraction of x/100, and so is not irrational, unless the numerator of the fraction (the # before the %) is itself irrational. For example: 2% is not irrational. 55.443% is not irrational. sqrt(5)% is irrational.

4*sqrt(2) Rational multiples of irrational numbers are irrational. sqrt(2) is about 1.414, and 5/4 = 1.25 < 1.414... < 1.75 = 7/4 so 4*sqrt(2) is between 5 and 7, and is irrational.

Sometimes. eg the irrational number √2 squared is 2 which is rational (2 = 2/1) eg the irrational number √(√2) squared is √2 which is irrational.

5, 6.5, 1/2

1 + sqrt(5)/2 is.

No. 2 + sqrt(5) and 2 - sqrt(2) are both irrational but their sum, 4 is rational.

The product of two irrational numbers may be rational or irrational. For example, sqrt(2) is irrational, and sqrt(2)*sqrt(2) = 2, a rational number. On the other hand, (2^(1/4)) * (2^(1/4)) = 2^(1/2) = sqrt(2), so here two irrational numbers multiply to give an irrational number.

Basically, an irrational number is one that cannot be expressed as a simple fraction.Since 4.4 is equal to 4 4/10, which reduces to 4 2/5, it is not an irrational number.