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An irrational number is a real number that cannot be expressed as a ratio of two integers, pq/ where q > 0.

sqrt(2) and pi are examples.

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Q: What is irrational number and give example of irrational number?
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Related questions

Can you add an irrational number and a rational number to give an irrational?

No, but you can add an irrational number and a rational number to give an irrational.For example, 1 + pi is irrational.


Can you give one example for surd which is not irrational?

It is impossible to have a surd that is not irrational. Surds are defined to be an irrational number (square root of a number).


Can multiplying two irrational numbers give you an irrational number?

Yes. For example, the square root of 3 (an irrational number) times the square root of 2(an irrational number) gets you the square root of 6(an irrational number)


What is an example of irrational?

pi is an example of an irrational number.


Can an irrational number be a decimal if so give an example?

Irrational numbers are decimal numbers that can't be expressed as fractions. An example is the square root of 2


Are irrational numbers closed under subtraction?

No, they are not. An irrational number subtracted from itself will give 0, which is rational.


Is the sum of two irrational number is always irrational?

No. For example, -root(2) + root(2) is zero, which is rational.Note that MOST calculations involving irrational numbers give you an irrational number, but there are a few exceptions.


Which of the number will produce an irrational number when multiplied by 0.5?

Any irrational number, when multiplied by 0.5 will give an irrational number.


Which number produces an irrational number when added to 0.4?

Any irrational number, added to 0.4 will give an irrational number.


Does dividing an rational number by an irrational number give you an irrational number?

Yes normally it does


Can Adding a rational number to an irrational number give you an irrational number?

You wont be able to add a rational number and an irrational number and get a number not in a fraction ( 3 + 22/7) (21/7 + 22/7 = 43/7) So, yes as you see in the example above it made another irrational number.


Does an irrational number multiplied by an irrational number equal an irrational number?

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.