Answer :
The correct option is (A) None.
The numbers of digits that are common to both sets is none.
What are sets?
In mathematics, a set is a group of distinct objects that form a group. A set can contain any type of group of items, such as a grouping of numbers, days of the week, vehicle types, and so on.
- Each element inside the set is referred to as a set element. When writing a set, curly brackets are used.
- A simple instance of a set could be as follows. Set A = {1,2,3,4,5}. A set's elements can be represented in a variety of ways.
- A roster form or even a set builder form is typically used to represent sets.
Now, according to the question;
Set A = {1,3,5,7,11,13,17,19,......} Prime Number Collection (The numbers which have only two factors i.e, 1 and the number itself)
Set B {15,25,35,45,55,......} Set of two-digit positive integers with the unit digit ("5").
Each two-digit positive integer with such a unit digit of 5 has much more than two factors; Set B has 1,5 as well as "itself" as factors.
As a result, these two sets are disjoint sets (no common element).
To know more about sets, here
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