Hi All,
We're told that N denotes a decimal. We're asked if N > 0.9 This is a YES/NO question. To answer this question, we need to use 'rounding' rules.
When a digit is 5-9, we round up. For example, 1.7 rounded to the nearest integer would be 2.
When a digit is 0-4, we round down. For example, 1.2 rounded to the nearest integer would be 1.
(1) When N is rounded to the nearest INTEGER, the result is 1.
With this Fact, we have a range of possible values for N:
0.5 <= N < 1.5
IF....
N = .85 then the answer to the question is NO
N = .91 then the answer to the question is YES
Fact 1 is INSUFFICIENT
2) When nN is rounded to the nearest TENTH, the result is 0.9
With this Fact, we have a range of possible values for N:
0.85 <= N < 0.95
IF....
N = .85 then the answer to the question is NO
N = .91 then the answer to the question is YES
Fact 2 is INSUFFICIENT
Combined, we already have 2 values that 'fit' both Facts (.85 gives us a 'NO' answer; .91 gives us a 'YES' answer).
Combined, INSUFFICIENT
Final Answer:
GMAT assassins aren't born, they're made,
Rich