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The number 1.21 is rational because it can be expressed as a fraction p/q where p and q are both integers.
1.21 = 121/100. Thus, it is rational.
In general, any number which can be expressed as a fraction, or a decimal which terminates (like 1.21) or repeats (like 1/3 = 0.3333...) is rational. All other real numbers are irrational.
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Is 121 a rational or irrational number?
Integers are rational numbers.
Is 121 irrational or rational?
1). This isn't a mathematical proof or definition, but it turns out that any numberthat you can completely write with digits is rational. We will now attempt to write121 completely, using digits:121We did it! So we're pretty sure that 121 is probably a rational number. Now we'll check it out according to the official mathematical definition:2). "A rational number is any number that can be written as the ratio of two whole numbers."We will now attempt to write 121 as the ratio of two whole numbers:121/1Again, we've succeeded! So 121 is definitely a rational number.
What set of numbers does the square root of 121 belong to?
The square root of 121 is rational, an integer, and a natural number.
Is the square root of 121 is irrational or rational?
Rational
Is the root of 121 irrational?
No, they are rational.
