Question

B={ } then n (B)= how much? ​

Answer 1

If $B=\{\}$, then $n(B)=0$.

Explanation:

• The empty set is a one-of-a-kind set that has no elements.
• The cardinality of an empty set is zero.
• It is represented by $\{\}$ or $\emptyset$.

Answer 2

B = { } then n(B) = 0

Given :

The set B = { }

To find :

The value of n(B)

Solution :

Step 1 of 2 :

Define empty set

A set that does not contain no element is called empty set. It is denoted by ∅ or { }

Step 2 of 2 :

Find the value of n(B)

Here the given set is B = { }

So the set B contains no element

Now n(B)

= Cardinality of the set B

= The number of elements in B

= 0

━━━━━━━━━━━━━━━━

Learn more from Brainly :-

$1.$ write the following sets in roster form N={x:x is odd number, 21<x<35,XEN

https://brainly.in/question/24185793

2. If A and B are two sets then A-B =B-A if

https://brainly.in/question/28848928