What is the value of x?We will not even look at the statements while answering the following questions
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient?
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient?
For DS questions that ask for the value of x
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
If the statement(s) provide more than one value for x
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
If the statement(s) provide more than one value for x
Data is NOT sufficient
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
If the statement(s) provide more than one value for x
Data is NOT sufficient
What is the approach?
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
If the statement(s) provide more than one value for x
Data is NOT sufficient
What is the approach?
Evaluate each statement independently first
What is the value of x?We will not even look at the statements while answering the following questions
When is the data sufficient? When is it not sufficient?
For DS questions that ask for the value of x
Data is sufficient when we can get a uniquevalue for x
If the statement(s) provide more than one value for x
Data is NOT sufficient
What is the approach?
Evaluate each statement independently first
If solving the equation results in a unique value for x, data is sufficient. Else no.
What is the value of x?Statement 1: x + 3y = 18
x + 3y = 18
The given equation is a linear equation in two variables.
What is the value of x?Statement 1: x + 3y = 18
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
What is the value of x?Statement 1: x + 3y = 18
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
What is the value of x?Statement 1: x + 3y = 18
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
So, we will not get a unique value for x from statement 1.
What is the value of x?Statement 1: x + 3y = 18
Statement 1 alone is NOT sufficient
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
So, we will not get a unique value for x from statement 1.
What is the value of x?Statement 1: x + 3y = 18
Eliminate choices A and DStatement 1 alone is NOT sufficient
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
So, we will not get a unique value for x from statement 1.
What is the value of x?Statement 1: x + 3y = 18
Choices narrow down to B, C or E.
Eliminate choices A and DStatement 1 alone is NOT sufficient
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
So, we will not get a unique value for x from statement 1.
What is the value of x?Statement 1: x + 3y = 18
Choices narrow down to B, C or E.
Eliminate choices A and DStatement 1 alone is NOT sufficient
x + 3y = 18
The given equation is a linear equation in two variables.
The value of x will be different for different values of y.
For e.g., if y = 0, x = 18. If y = 1, x = 15.
So, we will not get a unique value for x from statement 1.
For linear equations, the necessary condition to get a unique value for the unknowns is to have as many equations as the number of unknowns.
Is x > y?Statement 2 : x3 = -16
x3 = -16
x = 3−16. The result is unique
Odd roots such as cube root, fifth root will result in a unique value for x.
Is x > y?Statement 2 : x3 = -16
Statement 2 alone is SUFFICIENT
x3 = -16
x = 3−16. The result is unique
Odd roots such as cube root, fifth root will result in a unique value for x.
Is x > y?Statement 2 : x3 = -16
Eliminate choices C and EStatement 2 alone is SUFFICIENT
x3 = -16
x = 3−16. The result is unique
Odd roots such as cube root, fifth root will result in a unique value for x.
Is x > y?Statement 2 : x3 = -16
Correct Answer choice B.
Eliminate choices C and EStatement 2 alone is SUFFICIENT
x3 = -16
x = 3−16. The result is unique
Odd roots such as cube root, fifth root will result in a unique value for x.
Is x > y?Statement 2 : x3 = -16
Correct Answer choice B.
Eliminate choices C and EStatement 2 alone is SUFFICIENT
x3 = -16
x = 3−16. The result is unique
Odd roots such as cube root, fifth root will result in a unique value for x.
The value of 3−16 is not
positive. It is not an integer.
It does not matter. It only has to be unique.
Useful points
Equations : Unique solution
For Linear Equations: Number of equations should be as many as number of variables
Useful points
Equations : Unique solution
For Linear Equations: Number of equations should be as many as number of variables
Note : The above is a necessary but not sufficient condition
Useful points
Equations : Unique solution
Odd and even roots
For Linear Equations: Number of equations should be as many as number of variables
Note : The above is a necessary but not sufficient condition
Useful points
Equations : Unique solution
Odd and even roots
For Linear Equations: Number of equations should be as many as number of variables
Odd roots unique solution
Even roots NO unique solution
Note : The above is a necessary but not sufficient condition
For more questions
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