Question

Q. 3 Describe the following sets in roster form. B={x:x is a two digit number such that sum of its digits is 6}​

Answer 1

$\huge{ \tt{Given :}}$

The set in set builder form is

$\tt \star \: \: B = \{ \: x \: : \: x \: is \: a \: two \: digit \: number \: such \: that \: sum \: of \: its \: digits \: is \: 6 \: \}$

$\huge \tt{Concept :}$

Set is a collection of well defined object or data

There are two methods to represent any set

• Set builder form
• Roaster form or tabular form

Example :

Set builder form :

A : { 1 , 2 , 3 , 4 , ... }

Roaster form :

A : { x : x is a natural number }

$\huge \tt{Answer :}$

B = { 60 , 51 , 42 , 33 , 15 , 24 }