Question

The method in which all the members of a set are Listed separated by commas and enclosed in curly brackets is known as the - - - - method.
(a) roster
(b) tabular
(c) None of the above​

Answer 1

Given :

Members of set are seperated by commas and enclosed in curly brackets.

To find :

Name the method of representing set.

Solution :

Set is a defined collection of objects, these objects are called elements of a set.

Sets can be represented in three ways:

1. Set builder form method
2. Statement form method
3. Roaster or tabular form method.

1. Set builder form method : In this method a condition, formula or any statement is well written in between the pair of brackets to make a well denifed set of elements.

For example : P = {x : x is a natural number less than 5}

It is a set of natural numbers less that 5 (i.e. 1,2,3 and 4).

2. Statement form method : In this method, a very good description of elements is given and that statement is closed in brackets.

For example : {even number less than 10 } is written for the set of even numbers which are less than 10.

3. Roaster or tabular form method : The method in which all the members of a set are Listed separated by commas and enclosed in curly brackets is known as the roaster or tabular method.

In this method, elements are seperated by commas "," and closed within curly brackets "{}" .

For example : Let S denote the set of first 6 whole numbers, as S = {0,1,2,3,4,5}.

So, the asked method is called

ROASTER OR TABULAR FORM METHOD

Both are same.

so

answer is option a and b