Posted by **keke** on Thursday, May 29, 2014 at 8:04pm.

Which of the following numbers is irrational?

A 5/9

B 3.15

C /5

D 8.341

I THINK IT A

- MATH -
**keke**, Thursday, May 29, 2014 at 8:25pm
CAN SOMEBODY HELP ME

- MATH -
**Steve**, Friday, May 30, 2014 at 12:51pm
a rational number can be written as a fraction.

Any terminating or repeating decimal is also rational.

√5 is not rational. There is no fraction which is exactly equal to √5. The decimal value goes on forever and never repeats.

It is easy to prove that √5 is irrational, if you are interested. Just google proofs for √2 and follow the same logic you find there.

- MATH -
**keke**, Friday, May 30, 2014 at 1:22pm
so it c

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