No. The square root of an integer is either an integer, or an irrational number.
Yes. The square root of a natural number (positive integer) is either an integer, or an irrational number.
Any number that is presented as an integer "over" (aka divided by) an integer is automatically a rational number - that's what the definition of a rational number is.
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.
21 is a rational number.
It is equal to 21/2 which is a rational number
21 is not the square of an integer. The closest square number is 25.
Yes, albeit an irrational number
The nearest whole number (integer) is 21.
the square root of 21
An example of an integer is... - 4 is the opposite of 4, 21 is the opposite of - 21.