Numerator
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The "fraction bar" that we usually call it is actually called the vinculum.
The number on the bottom of the fraction bar is first, then divide that by the top number :)
An irrational number is a number that cannot be expressed as a fraction. So whole numbers and fractions are out. You can then just make a number like 6.34298374923743333333. You put a bar over the 3 so it repeats, and the number cant be expressed as a fraction, makin git an irrational number.
No. Any number you can completely write down with digits, plus a fraction bar or a decimal point if you need one, is rational.
-- Any number that you can completely write down using digits, and a decimal point or fraction bar if needed, is rational. -- A rational number is defined as one that can be written as a fraction using whole numbers. -19 can be written as the fraction -19/1 .