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For mathematicians n usually represents an integer; integers are rational.
However for people who are not mathematicians n can be anything. The only safe answer to this question is 'don't know'.
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Is every integer an irrational number?
No integer is an irrational number. An irrational number is a number that cannot be represented as an integer or a fraction.All integers which are whole numbers are rational numbers.
Is 1 n irrational number?
No.
What number produces an irrational number when multiplied by 0.4?
Every irrational number, when multiplied by 0.4 will produce an irrational number.
Can an irrational number be a whole number?
No it cannot. Any whole number, n, can be written as the ratio n/1 where n is an integer. Since it can be expressed as a ratio of two integers, it is rational and so cannot be irrational.
Can some integers be irrational numbers?
No, an integer n can be expressed as a ratio: n/1. It is, therefore, rational.
Is 21 an irrational number?
No - numbers are neither irrational nor rational.Ans 2Well, it is true that 21 is not irrational.As to being rational, every integer is rational.Proof : Take an integer n, add it to itself.Now look at (n+n)/2. It is obviously rational, but equally obviously it reduces to n.
Is it possible to completely write out an irrational number in decimal form?
no. irrational numbers are always infininately long, otherwise the could be represented as a fraction by multiplying by 10^n and dividing by 10^n where n is a number large enough to make the number a number with no decimals.
How do you know if a number is irrational?
Let Q be all the rational numbers, where Q={m/n:m is an integer and n is a natural}Every number does not belong to Q is irrational.
Is -3.14 an irrational number?
-3.14=(-314/100), so -3.14 is a rational number (since it can be expressed as p/q, with p and q being integers). If you mean -pi (which is approximately -3.14), then it is irrational. pi is irrational (for a proof, which is fairly complicated, see: http://www.lrz-muenchen.de/~hr/numb/pi-irr.html). And an irrational number times a rational number (which -1 is since it can be expressed as -1/1) is irrational. This can be proved by assuming the product is rational. Let x be a rational number, which can be expressed as m/n with m and n integers), and let y be the irrational number. Let S=xy. Assume S is rational, and can be expressed as t/u, with t and u being integers. Then: S=xy t/u=(m/n)y [Divide both sides by m/n, which is the same as multiplying by its reciprocal, n/m) (t*n)/(u*m)=y Since t, n, u, and m are integers, tn and um are integers. (t*n)/(u*m)=y implies y is rational, which is a contradiction. Therefore, xy=S is irrational.
Is the square root of 12 a rational number or irrational number?
If the square root of a natural number is not an integer, then it is irrational. Another way to look at it: if a natural number N falls between two perfect squares, then the square root of N is irrational.So in this case, 12 is between 9 (3 squared) and 16 (4 squared). So the square root of 12 is between 3 and 4, and also the square root of 12 is irrational.
Is the square root of 5.777 rational or irrational?
Irrational. Irrational. Irrational. Irrational.
Is the square root of 0.025 irrational or rational?
It is irrational.
