A rational number is a number that can be expressed as a ratio of two integers. In this case, 2.645 can be expressed as 2645/1000, which simplifies to 529/200 when reduced to its lowest terms. Since 529 and 200 are both integers and the denominator is not zero, 2.645 is a rational number.
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Rational
No
If x is rational the it is rational. If x is irrational then it is irrational.
They can be rational, irrational or complex numbers.They can be rational, irrational or complex numbers.They can be rational, irrational or complex numbers.They can be rational, irrational or complex numbers.
Can be irrational or rational.1 [rational] * sqrt(2) [irrational] = sqrt(2) [irrational]0 [rational] * sqrt(2) [irrational] = 0 [rational]