**Anyone know how to do this?**

**List the members of the these sets:**

**a. {x | x is a real number such as x2**

**= 1}**

**b. {x | x is a positive integer less than 12}**

**c. {x | x is the square of an integer and x < 100}**

**d. {x | x is an integer such that x2**

**= 2}**

**Answer:**

Just list the numbers which follow the given condition. Now, there are two real numbers whose squares equal 1, i.e. 1 and -1. So,

(a). {1, -1}

similarly,

(b). {1,2,3,4,5,6,7,8,9,10,11}

©. {1,4,9,16,25,36,49,64,81}, these are all square of integers 1,2,3…9

(d). It’s a null set as there’s no integer whose square is equal to 2.