Question

Consider the set A={10,15,20,25}.Fill in the blanks with the appropriate symbol 1, 10 A 2, 23 A

Answer 1

Given:

The set $A={10,15,20,25}$

To Find:

Fill in the blanks with appropriate symbol

Step-by-step explanation:

i) 10 ∈ A

• The number $10$ comes in the set given so it is in set membership and is the element of the set.
• The symbol ∈ indicates a set membership and also means “ it is an element of” so that the statement x ∈ A means that $x$ is an element of the set $A$.

ii) 23 ∉ A

• The symbol ∉ here is that which represents that the numbers which are not belongs to the set and there is also no set membership exists so the number $23$ does not belongs to the set.