masuda wrote:
GMATPrepNow I am the beginning of my GMAT preparation, and I don't understand when a statement gets sufficient. I have got it form the solution of you above. Thanks for that. Could explain a bit about when a statement gets sufficient, please?
A statement is sufficient if it allows us to answer the
target question with certainty.
In this case the target question is:
What is the thousandths digit of decimal d?As you can see, it's impossible to answer this
target question without additional information.
So, as it stands, the answer to the target question can be 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9
Statement 1 tells us that the tenths digit of 100d is 3.
From this information, we can be certain that
the thousandths digit of decimal d is 3In other words, we can answer the
target question with certainty.
So statement 1 is sufficient.
Here's a complete set of videos that will explain everything you need to know about Data Sufficiency questions:
https://www.gmatprepnow.com/module/gmat ... ufficiencyCheers,
Brent
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