KV JETPUR MATHS QUIZ 18

The set of positive real numbers.

• R

• Q

• 
  

  $R^+$
  

• $R^-$

{a, e, i, o, u} is ........................form the set.

• Roster or tabular

• Set-builder

The solution set of the equation x² + x – 2 = 0 in roster form.

• {-1, 2}

• {1, – 2}

• {1, 2}

• {-1, – 2}

A team of eleven best-cricket batsmen of the world.

• Set

• not a set

The collection of all non negative integers is ..........

• a set

• not a set

The sign denote x ∉ A

• "x belongs to A"

• "x not belongs to A"

• "x equal to A

• x is less then A

Find out a wrong representiation of set.

• A = {x : x is a natural number less than 6}

• B = {1,3,5,7,9,11,13.............. }

• C = {x : x is a letter of the word MATHEMATICS}.

• d = {2,4,6,8,10,12,14.............. }

D = {x : x is a prime number which is divisor of 60}

• D = { 2, 3 , 5 , 9 }

• D = { 1,2, 3, 5 }

• D = { 2 , 2 , 3 , 5 }

• D = { 2 , 3, 5 }

The empty set is denoted by the symbol .

• { }

• 
  

  
  $\phi$
  

• $both\ \ \ \ \ \ \phi\ \ \ \ \ \ \ and\ \ \ \ \ \ \left\{\right\}$

A set which does not contain any element is called

• Void set

• Null set

• Empty Set

• All of the above