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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It is impossible to have a surd that is not irrational. Surds are defined to be an irrational number (square root of a 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)
pi is an example of an irrational number.
Irrational numbers are decimal numbers that can't be expressed as fractions. An example is the square root of 2
All real numbers are irrational. For example, Pi is an irrational number that is a real number. Other irrational numbers can be the square root of an imperfect square.