# Formulas For Data Sufficiency

## Formula For Data Sufficiency:-

**Definition:**

In data sufficiency, questions are framed to examine students reasoning, logical and decision-making skills. For this, you must read the questions properly and based on the information given in the options you have to decide whether the information is sufficient to answer or not. The questions could vary from blood relation to mathematical calculations and sometimes coding and decoding problems.

Each data sufficiency element presents you with a question. Also, five answer choices will be there, containing the relationship between question and the data given in an indirect way. What all you need to do is to select the answer option that correctly defines this relationship.

## Understanding Solution Selections:

For solving data sufficiency questions you need to first understand the question and based on that, selection should be made. The questions will be asked with certain information with two statements labeled I and II. You need to analyze whether the information given in the label I and II is adequate to come to the solution or not. You should use all the data given in the statements along with your mathematics skill and well-known facts (such as sun rises in the east or the meaning of niece), the selection is to be made from below given options:

The answer can be obtained from Statement I alone but statement II alone is not sufficient to answer the question asked;

A. Data in statement 1 is sufficient alone to determine the answer.

B. Data in statement 2 is sufficient alone to determine the answer.

C. Data in either of the statements is sufficient to determine the answer.

D. Data provided in both the statements together are not sufficient to determine the answer.

E. Data in both statements are required to determine the answer.

**Note:** In data sufficiency problems, you can mark as “the data given in the statements is satisfactory” only when there is outcome or solution is in the numerical value.

### Question 1.

**Who is the father of A.**

**Statement I: x and y are brothers.**

**Statement II: y’s wife is the sister of A’s wife.**

A. Data in statement 1 is sufficient alone to determine the answer.

B. Data in statement 2 is sufficient alone to determine the answer.

C. Data in either of the statements is sufficient to determine the answer.

D. Data provided in both the statements together are not sufficient to determine the answer.

E. Data in both statements are required to determine the answer.

#### Answer: D

#### Explanation:

The statement I gives the relation between X and Y. So statement I alone cannot determine the answer. Through statement II we can determine that Y is the brother-in-law of A. Thus using both the statements you cannot determine the father of A. hence option D is correct.

**Read Also: Tips And Tricks to solve Data Sufficiency Questions**

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