An irrational number cannot be expressed in form of a/b.
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A rational number is one that can be expressed as a ratio of two integers, a/b where b is not zero.An irrational number is a number that cannot be expressed in such a form.
They cannot be expressed as a fraction a/b, where a and b are integers (with b non-zero).
It is a real number that cannot be expressed as a ratio of two integers, a/b (where b>0).
Rational Number: Any number which can be expressed in the form of a/b(a & b are integers; b is not equal to 0). 25.75232 = 2575232/100000(which is in the form of a/b)
An irrational number can't be expressed in the form of a/b, where a and b are integers. But, 41 can be expressed as 41/1 which clearly shows that 41 is not an irrational number.