# Is n irrational?

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'.

### Can you add an irrational number and a rational number to give an irrational?

No, but you can add an irrational number and a rational number to give an irrational. For example, 1 + pi is irrational. Read More

### Is every irrational number an integer?

Far from it; in fact no integer can be irrational. proof : let n be any integer. (n+n)/2 is a rational number, which reduces to n. Read More

### 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. Read More

### Can some integers be irrational numbers?

No, an integer n can be expressed as a ratio: n/1. It is, therefore, rational. Read More

### Is 21 an irrational number?

No - numbers are neither irrational nor rational. Ans 2 Well, 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. Read More

### 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. Read More

### Is a negative irrational number irrational?

If it says "negative irrational", then obviously it is irrational. Read More

### Can 2 irrational add to an irrational number?

Yes. The sum of two irrational numbers can be rational, or irrational. Read More

### Whether a rational number multiplied by an irrational number gives an irrational number?

rational * irrational = irrational. Read More

### 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. Read More

### Why can't irrational numbers ever be precisely represented in a decimal form?

Suppose an irrational number can be written precisely in decimal form, with n digits after the decimal point. Then if you multiply the decimal value by 10n you will get an integer, say k. Then the decimal representation is equivalent to k/10n, which is a ratio of two integers and so the number, by definition, is rational - not irrational. Read More

### Can an irrational number divided by an irrational number equals an irrational number?

Yes, an irrational number divided by an irrational number will usually be an irrational number, but not always. For example, pi / (3pi) is 1/3, which is a rational number, but pi/e is an irrational number. Read More

### If you add two irrational numbers do you get an irrational number?

Not necessarily. The sum of two irrational numbers can be rational or irrational. Read More

### Is the sum of a rational and irrational number rational or irrational?

It is always irrational. Read More

### Is the product of a rational number and an irrational number rational or irrational?

Such a product is always irrational - unless the rational number happens to be zero. Read More

### Is the sum of any two irrational number is an irrational number?

The sum of two irrational numbers may be rational, or irrational. Read More

### Is pi divided by 2 rational or irrational?

If a numerator and/or denominator in a fraction is irrational, the entire fraction is irrational. Since pi is irrational, pi divided by two is also irrational. Read More

### When an irrational number is divided by a rational number is the quotient rational or irrational?

Irrational. Read More

### If you divide a rational number by an irrational number is the result irrational?

It is not always irrational. Read More

### Can you subract an rational and irrational number and get an irrational number?

Yes. In fact, a rational plus or minus an irrational will always be irrational. Read More

### 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… Read More

### 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. Read More

### Is an irrational number times an irrational number always irrational?

The square root of 2 is irrational, yet the product of it with itself is 2. So the answer is no. Read More

### Is the number below rational irrational both rational and irrational or neither rational nor irrational?

If it can't be expressed as a fraction then it is an irrational number Read More

### Is an irrational number plus an irrational number rational?

No. The sum of an irrational number and any other [real] number is irrational. Read More

### What is a negative irrational number?

A negative irrational number can be thought of as an irrational number multiplied by -1, or an irrational number with a minus sign in front of it. Read More

### Is the product of a nonzero rational number and an irrational number rational or irrational?

It is always irrational. Read More

### Is a rational plus an irrational equals a rational?

No. A rational plus an irrational is always an irrational. Read More

### There is no negative irrational number?

If you have any positive irrational number, then its negative is also irrational. Read More

### Are rational numbers sometime irrational?

No, they are disjoint sets: no rational is irrational and no irrational is rational. Read More

### When you multiply an irrational number by a rational number will the answer always be irrational rational or both?

It will be irrational. Read More

### Is -4x rational or irrational?

If x is rational the it is rational. If x is irrational then it is irrational. Read More

### Is they sqare root of 94 irrational or irrational?

The square root of 94 is an irrational number Read More

### Is a percent number an irrational number?

A percent can be represented as a fraction of x/100, and so is not irrational, unless the numerator of the fraction (the # before the %) is itself irrational. For example: 2% is not irrational. 55.443% is not irrational. sqrt(5)% is irrational. Read More

### Are irrational numbers really 'irrational' or are they rational in disguise just we cannot understand them?

They are really irrational. They cannot be written as a ratio (fraction). Read More

### The sum of a rational number and an irrational number and an irrational number is what?

The sum of the three can be rational or irrational. Read More

### Is the sum of a rational and irrational number never an irrational number?

Wrong. It is always an irrational number. Read More

### What is the classification of the product of a rational and an irrational number?

If you multiply a rational and an irrational number, the result will be irrational. Read More

### Can an irrational number minus a rational number equal an irrational number?

Yes, it will always be irrational. Read More

### Is 3over4 rational or irrational?

irrational, if it's is not tons of #s after the decimal that means its terrminating irrational Read More

### What is the Next to rational and irrational number?

Next to any rational number is an irrational number, but next to an irrational number can be either a rational number or an irrational number, but it is infinitely more likely to be an irrational number (as between any two rational numbers are an infinity of irrational numbers). Read More

### Is -9pie rational or irrational?

Irrational. If you multiply a rational number by an irrational number, you will always get an irrational number (except if the rational number happens to be zero). Read More