Data Sufficiency

Question 1

Split into 2 sections

Answer 1

1) A and D (if the answer cannot be A, we eliminate A and D); 2) B,C,E: 1st statement separately; 2nd: evaluate together

Question 2

Value Sufficiency

Answer 2

Whether or not you have a unique value to determine the unique value of something

Question 3

Yes or No

Answer 3

Enough information to conclusively say yes or no

Question 4

Simplify

Answer 4

Try to simplify as much as possible

Question 5

Data sufficiency, calculate the numerical value or not

Answer 5

No, we are not asked to calculate; we are just asked whether there is unique values or not. Carry up to the point where we are sure we could can’t prove

Question 6

Two statements sufficient

Answer 6

Neither statement one nor statement two alone is sufficient to answer the questions, but there is a single unique value shared between both statements then both statements together are only sufficient

Question 7

Strategy with data sufficiency

Answer 7

when solving data sufficiency, your strategy should be to try to prove that the statements are not sufficient

Question 8

Type of numbers to test in data sufficiency

Answer 8

1) Positive integers
2) Positive Proper Fractions (fractions between 0 and 1-> value will be also between 0 and 1)
3 ) Zero
4 Negative Proper fractions (Fractional between -1 and 0)
5) Negative integers

Question 9

Two statements in data sufficiency

Answer 9

Two statements in data sufficiency will never contradict each other -> just add more or no information