gmat800live
Hi!
When question 297 (DS05772 OG19) says "each letter represents an integer". I am not sure if it means each letter represents a unique integer, or each letter represents an integer (and 2 letters can actually be the same integer). Which one is right? I assume that given "unique" is not specified, all letters could be same integer unless told otherwise!
When question 333 (DS16529 OG19) says "if d denotes a decimal, is ..." What does "a decimal" mean? Only 0.xxxx? Or actually 10.2 could also be a decimal? My understanding is that a decimal is a number with decimals... unit digit doesn't need to be 0? Not sure.
Thank you.
Hi
Q1) You are right. When it is not specified, each letter is unique, then it can be repetitive.
Q2) Any number of the form a.xxxx is a decimal. a can be zero or any integer, similarly xxxx can single integer or series of integers or repeating integers.
For more on Quant theory, refer this post:
https://gmatclub.com/forum/ultimate-gma ... 44512.html