Question

number of a minus b in sets​

Answer 1

Answer:

If A and B are two sets, then their difference is given by A - B or B - A. 

• If A = {2, 3, 4} and B = {4, 5, 6} 

A - B means elements of A which are not the elements of B. 

i.e., in the above example A - B = {2, 3} 

In general, B - A = {x : x ∈ B, and x ∉ A} 

• If A and B are disjoint sets, then A – B = A and B – A = B 

Answer 2

$\large{\underline{\boxed{\sf Question}}}$

Number of a - b in sets.

$\large{\underline{\boxed{\sf Answer}}}$

A way of modifying a set by removing the elements belonging to another set. Subtraction of sets is indicated by either of the symbols - or \. For Example, A minus B can written either A - B or A \ B.