Posted by **jacqueline** on Tuesday, April 30, 2013 at 1:09pm.

write a rational and irrational number between 1.12301 and 1.1230101.

- math theory -
**Steve**, Tuesday, April 30, 2013 at 2:03pm
rational: 1.12301005

for an irrational, try this:

1.12301^2 = 1.2611514601

1.1230101^2 = 1.261151684702

So, pick any number in between those, which ends in 2,7 or 8 (so it cannot be a perfect square). So, if we choose

(1.2611514601 + 1.261151684702)/2 = 1.261151572401

then its √ will be between the two original numbers. So,

√1.261151572401 = 1.12301004999999888692...

Of course, we could have chosen something easy like

1.12301 + π/10000000000000

or

1.12301 + √2/100000000000000000

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