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Can be irrational or rational.1 [rational] * sqrt(2) [irrational] = sqrt(2) [irrational]0 [rational] * sqrt(2) [irrational] = 0 [rational]
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No, it depends on divided WHAT!
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Can be irrational or rational.1 [rational] * sqrt(2) [irrational] = sqrt(2) [irrational]0 [rational] * sqrt(2) [irrational] = 0 [rational]
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Rational number can be divided into more that the number 2. Irrational number are numbers that can only be divided evenly with the number 2.
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This qquestion is previously asked in wiki answers http://wiki.answers.com/Q/Is_zero_a_rational_numberhere is a copy of itA Rational number is one that CAN be expressed as the division of two Integers.0/1 = 00/2 = 0...0/N = 0 ; if N is an Integer different than zero.etc.So Zero IS a Rational Number.Without taking away the truth of this, watch out for:0/0 which is NOT 0. (some will say this value is Undefined, others will say it is Infinite)Note that a Rational Number does not have to be an Integer.i.e. 0.75 is a rational Number since it is 3 divided by 4 (i.e 3/4, or 6/8, etc.).A Famous NON Rational Number is PI = 3.141592654......PI is NOT Rational since there are no Integer numbers A and B that divided will yield PI.PI tells how many diameter lengths are needed to wrap a circle (It is obtained by dividing the perimeter of a circle by its diamater)
The number -1/2 is a rational number, a negative integer divided by a positive integer.
An even number can be divided by 2 evenly. An odd number will have a remainder of 1 when divided by 2. Rationals can be either.
An even number can be divided by 2. An odd number will have a remainder when divided by 2. 0 is an even number.