If you read it out loud, or to yourself, you should hear some repetition in the writing.
From the excerpt given above, it can be infer that the residents of East Egg are rich, they are able to acquire beautiful homes which are decorated with beautiful things that money can buy; so their homes and environment appear very beautiful and attractive but this is in contrast to their personal characters which are far from attractive. So they use their beautiful surrounding to conceal their unattractive characters.<span />
First of all, since this is a math question, you should post this in the Mathematics section.
Secondly, call the smaller digit x - clearly, then, the larger digit is x+8. We know x is at least one, and x+8 is at most 9 (since otherwise x+8 would not be a digit). If x is greater than one, x+8 will be ten or more, but x cannot be less than one, so x must be one. As a result, our number has a tens digit of 1+8=9, so the number is 91.
bounded
conditional
incomplete
indefinite
limited
needy
qualified
uncertain
unfinished
abridged
part
partial
accountable
circumscribed
complaisant
compliant
dependent
flawed
imperfect
restricted
you could use one of this words.