Posted by jude on .
I am a decimal between 2 and 3. The digit in my thousandths place is the sum of the digits in my tenths and hundredths place. The digit in my tenths place is the difference of the digits in my thousandths and hundredths place. The digit in my hundreths place is one less than the digit in my thousansths place. What decimal number I am?

math 
PsyDAG,
.189
.178
.156
.145
.134
.123
Which do you want to use? 
math 
Steve,
what's the trouble? Just start working in the clues. The number is
2.abcdefg...
c = a+b
b = ca (well, duh)
b = c1
It appears that the number is just
2.abc
c = a+c1
a = 2c+1
Now, since a < 10, c < 5
So, if a = 0,1,2,3,4
then c = 1,3,5,7,9
and b = 1,2,3,4,5
So, we could have
2.011
2.123
2.235
2.347
2.459
If you don't want to allow repeated digits, then the only choices are
2.347
2.459 
math 
PsyDAG,
Most of Steve's answers do not fit the requirement of "The digit in my hundreths place is one less than the digit in my thousansths place."

math  ouch 
Steve,
Dang. Don't know what I was thinking.

math 
jude,
2.134