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Yes 2/5 is a rational number
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∙ 9y ago
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Does there exist an irrational number such that its square root is rational?
No, and I can prove it: -- The product of two rational numbers is always a rational number. -- If the two numbers happen to be the same number, then it's the square root of their product. -- Remember ... the product of two rational numbers is always a rational number. -- So the square of a rational number is always a rational number. -- So the square root of an irrational number can't be a rational number (because its square would be rational etc.).
What The product of two rational numbers?
It is a rational number.
What is 23.7 an integer a whole number a rational number or all of the above?
It is a rational number but not either of the other two.
If x is rational and y is rational then xy is rational?
Yes, the product of two rational numbers is always a rational number.
Is the difference of two rational numbers a rational number?
Yes.
Is 7 and 1 fifth and rational number or a integer?
It is rational but not an integer.
Is one and one fifth a rational number?
Yes, it is.
What is the whole number of one fifth?
One fifth is a rational fraction. It is not a whole number and cannot be made into one.
Is the product of two rational numbers irrational?
The product of two rational numbers is always a rational number.
Can you add two rational numbers and get a rational number?
Every time. The sum of two rational numbers MUST be a rational number.
What is the maximum number of rational number between any two rational numbers?
There are [countably] infinite rational number between any two rational numbers. There is, therefore, no maximum.
Does there exist an irrational number such that its square root is rational?
No, and I can prove it: -- The product of two rational numbers is always a rational number. -- If the two numbers happen to be the same number, then it's the square root of their product. -- Remember ... the product of two rational numbers is always a rational number. -- So the square of a rational number is always a rational number. -- So the square root of an irrational number can't be a rational number (because its square would be rational etc.).
What kind of number do you get if you multiply two rational numbers?
You get a rational number.
What fraction is one half or one fifth?
They are two proper rational fractions.
Is one-fifth a rational number?
Yes , of course. One-fifth is one divided by five. One and five are both integers, making a fraction (sometimes called a ratio). That's what a rational number means.
Is the product of two rational number irrational or rational?
It is always rational.
Which number can be multiplied to a rational number to explain that the product of two rational numbers is rational?
It must be a generalised rational number. Otherwise, if you select a rational number to multiply, then you will only prove it for that number.
