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No. For example, 20.5 is irrational; indeed it was one of the first Irrational Numbers to be discovered.

Q: If a is rational and b is rational is a to the b power is rational?

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Yes. Any number that can be put into fraction form with a/b, implying a and b are integers is a rational number

Let `a` be a rational number and `b` be an irrational number,assume that the sum is rational. 1.a +b =c Where a and c are rational and b is irrational. 2.b=c-a Subtracting the same number a from each side. 3.b is irrational c-a is a rational number we arrived at a contradiction. So the sum is an irrational number.

Yes, 100 is a rational number.A rational number is any number that can be expressed as the quotient a/b of two integers, with the denominator b not equal to zero. Since b may be equal to 1, every integer is a rational number.

A rational number is the set of number expressed in the form of a fraction a/b, where a and b are integers and b isn't equal to 0

7.6 is a rational number. Any number that can be expressed as a/b is rational.

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As long as A and B are integers, A/B is rational.

2 and 1/2 are rational numbers, but 2^(1/2) is the square root of 2. It is well known that the square root of 2 is not rational.

A rational number is a number that can be expressed as a/b. a and b must both be integers. For any finite decimal, you can multiply by a power of 10 to get an integer. In this case, you can multiply by 1,000 to get 682. Therefore, 0.682 can be expressed as 682/1,000. This is why 0.682 is rational.

A rational number is a number that can be written in the form a/b, where "a" and "b" are integers and b is not equal to zero. For example, whole numbers are rational numbers.

No. 3 = 3/1 which is of the form a/b (with a & b integers) which is a rational number

If a and b are both rational then a = 0 = b. If they are not both rational then there are an infinite number of solutions.

Yes. Any number that can be put into fraction form with a/b, implying a and b are integers is a rational number

from another wikianswers page: say that 'a' is rational, and that 'b' is irrational. assume that a + b equals a rational number, called c. so a + b = c subtract a from both sides. you get b = c - a. but c - a is a rational number subtracted from a rational number, which should equal another rational number. However, b is an irrational number in our equation, so our assumption that a + b equals a rational number must be wrong.

Rational numbers are numbers that can be expressed as a ratio of two integers, a/b, where b is not zero.

Let `a` be a rational number and `b` be an irrational number,assume that the sum is rational. 1.a +b =c Where a and c are rational and b is irrational. 2.b=c-a Subtracting the same number a from each side. 3.b is irrational c-a is a rational number we arrived at a contradiction. So the sum is an irrational number.

Numbers in the form of a/b, where a and b are integers, are called rational numbers. 3.1415926531 can be written as 31415926531/10000000000. So it is a rational number.

Subtract rational number A from the other rational number B. If the answer is> 0 then B is bigger than A= 0 then B is equal to A< 0 then B is smaller than A