**Roster or tabular form of a set** ; all elements of a set can be counted and listed or limited in number, object, names, country name, food atom, food type, countries, ten school names of Multan, are **closed in bracket** with separate comas {……} Is called roster or tabular form of a set.Roster or tabular form of set image.

**Roster form of set sign {}**

{some element with comas}

**Empty set in Roster form sign**

{no element in the set} = {} = φ

**Examples:**

Roster or tabular form of a set of Examples

Type of form | Roster form or Tabular form | Descriptive form |

Example 1 | N= {1,2,3,4,5,6,7} | Natural number less than seven |

Example 2 | W = {8,9,10,………..} | Whole number greater than eight |

Example 3 | Z ={-1,-2,-3,-4……..} | set of integers less than zero |

Example 4 | Z = {1,2,3,4………} | set of integers greater than zero |

Example 5 | Z= {0.1,2,3……..} | set of integers greater or equal to zero |

Example 6 | Q ={0…….1/4……… 1/2……….1} | set of rational numbers greater or equal to zero less or equal to one |

Example 7 | O = {1,3,5,7} | set of first four odd numbers |

Example 8 | E = {2,4,6,8,10} | set of Even numbers less or equal to ten |

Example 9 | P = {2,3} | Set of prime factors of 18 |

**More Example in Roster form of set**

Q:

Last three words of the English alphabet

**Answer: In set roster form**

x = {x, y, z}

Q:

x is a set of real numbers less or equal 10

Answer in roster form:

**X = {1,2,3,4,5,6,7,8,910}**

this set is builder form of set ⇓

**X = {x | x ∈ N and x ≤ 10}**

Q :

A is the set of “UNIFORM” vowel words

**Roster form**

**A = {i, o, u}**

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