## How to use the Set Solver ##### Begin by typing the question. Each question should begin with a Universal set U. Examples of acceptable inputs of universal set :
U = {x:1 ≤ x ≤ 12 , x is an integer}
U = {x:x is an integer, 1 ≤ x ≤ 12 }
U = {x|1 ≤ x ≤ 12 , x is an integer}
U = {x|x is an integer, 1 ≤ x ≤ 12 }
U = {1,2,3,4,5,6,7,8,9,10,11 }
U = {a,b,c,d,e,f,g}
##### Then add 2 or 3 sub sets. Each set should be represented by a capital letter e.g A,B,C etc. Examples of acceptable inputs for subsets are:
A = {x:x is a prime number}
B = {x:x is a multiple of 4}
C = {x:x is a divisible by 3}
P = {x:x is a factor of 20}
Q = {x:x is a an even number}
R = {x:x is a an odd number}
M = {x:x is a perfect square}
N = {x:x is a perfect cube}
T = {2,4,6,8}
S = {r,i,ce}
##### Use the keyword "Find" to ask a question. Below are examples of acceptable questions. ( Note that you should use the Union symbol ∪ provided on the calculator button. Do not use the letter u from the keyboard.)
Find A ∩ B
Find A ∪ B ∪ C
Find (A ∪ B) ∩ C
Find A ∩ (B ∪ C)
Find (A ∪ B) ∩ (A ∪ C)
Find A' ∩ B'
Find n(A ∩ B)
Find |A ∩ B|
##### A standard input will be like as follows:
U = {x:1 ≤ x ≤ 10, x is an integer}
A = {x:x is an odd number}
B = {x:x is an even number}
C = {x:x is a prime number}
Find (A ∩ B)' ∪ (A ∩ C)'