Question

Is 104.42 rational or irrational

Answer 1

This is a rational number! 

An irrational number has repeating values or just random numbers after the decimal point.

Here's an example...

Tell, does this number look rational?

4.2359712309458730495870192354870394587234098657293085412364781236409584790853467923456790324785098234570923845702398547 (and it goes on forever...and ever...and ever......)

I'm quite sure that whatever that number is, it is not a rational one!

But, does this number look rational?

150.594. 

Well, it terminates. That's the important part there, this number terminates. If the decimals never <u />terminate, the number is irrational. =)