Why is 2 a rational number?

Answer 1

Two is a rational number because it ends. If the number was 2.6769956387589653875832683836836823656596518..... then it would be irrational because it never ends.

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The definition of "rational number" is: "Any number that can be written as the ratio of two integers."

'2' can be written as 2/1, 4/2, 6/3, 8/4, 792/396, and a lot of other ratios of integers.

It satisfies the definition of "rational number". That makes it a rational number.

The answer given up above the broken line doesn't do it. It's true that the

decimal form of an irrational number never ends, but that fact can't be used

as a definition, because it doesn't work the other way. A decimal that never

ends is not necessarily an irrational number.

0.333333333... never-ending is the decimal representation of 1/3, which is

a perfectly good rational number.

Answer 2

Any whole number can be written as a fraction, with the desired number in the numerator, and 1 in the denominator.